RANDALL, Circuit Judge:
Willie R. Smith, a former Athens, Georgia police officer, was dismissed by the Chief of the Athens Police Department, Everett E. Price, for violation of rules and regulations1 applicable to Athens police of[1373]*1373fieers. After unsuccessfully appealing to the City of Athens Personnel Board, Smith filed a lawsuit under 42 U.S.C. § 1983 alleging that his dismissal deprived him of rights guaranteed by the first, fifth, and fourteenth amendments to the Constitution, and that the rules and regulations pursuant to which he was discharged were unconstitutionally vague and overbroad on their face. The district court agreed and ordered reinstatement, back pay, injunctive relief and attorney’s fees. Smith v. Price, 446 F.Supp. 828 (M.D.Ga.1977).
The relevant facts as set out in the district court’s opinion are as follows:
Officer Smith on February 8, 1976, was married and living in the adjoining county of Oconee. On that date while off duty and out of uniform, he visited the woman with whom he was having an extra-marital affair, in her apartment in Athens and while there was shot by the woman’s former lover. Following an investigation he was suspended for ten (10) days by Chief Price who stated as a reason for that action:
“You are hereby suspended for a period of 10 working days for the violation of the Departmental Rules and Regulations, Section 101.48. A copy of the Internal Affairs Investigation Report is attached for your information. As per to our discussion of this date any further violation of the departmental rules and regulations will lead to dismissal.” Plaintiff’s Exhibit “1” at 12. (Emphasis supplied).
Section 101.48 of the regulations concerned conduct unbecoming an officer.
On June 8, 1977, Chief of Police Price received a telephone call from the woman with whom plaintiff Smith was having an affair in February 1976. She advised that the affair had continued and told of many personal difficulties between her, Officer Smith and Officer Smith’s wife. [1374]*1374Until the receipt of this telephone call the defendant police chief and city officials were unaware of plaintiff Smith’s post-February 1976 extra-marital conduct. As his personnel file and the evidence show, he was then considered to be generally satisfactory and in some respects an outstanding police officer.
Chief Price directed Major Wallace to investigate the situation. He did, and based upon what the plaintiff, his wife and his girlfriend freely and voluntarily said, Major Wallace reported:
“TO: Everett E. Price, Chief of Police
“FROM: Mark Wallace, Uniform Division Commander
“SUBJECT: Internal Investigation; Officer Willie R. Smith
“OFFENSE: Failure to adhere to and abide by:
1. Departmental General Order 76-4— Rules and Regulations: Section I.A and I.Af — Rules Governing Orders and Commands:
2. Section II.A, II.A1 and II.A2 — Professional Conduct of Departmental Members;
3. Section II.E — Professional Conduct of Departmental Members (Members are Prohibited);
4. Section III.F — Responsibilities of Members;
5. General Order 76-4 — Conduct Unbecoming an Officer;
6. City of Athens Merit System: Section VIII A l.f.(l), (6), and (9).
“DATE: June 8, 1977
BASIS FOR INVESTIGATION:
On June 8, 2977 (sic), Miss-* contacted Chief Price telephonically and alleged misconduct on Willie Smith’s part directed toward her, to include physical assualt (sic) and forceful threats.
* Name omitted.
SYNOPSIS:
Investigation disclosed that Officer Willie Smith has had an affair with Miss_for a period of more than three (3) years. During this time Officer Smith was shot three (3) times in Miss_apartment on February 8, 1976 by a boyfriend of Miss__As a result of that incident Officer Smith was suspended for a ten (10) day period and advised in writing that other such misconduct would result in his dismissal.
Since the above incident, Officer Smith has repeatedly visited Miss _ in her residence while he was on a duty tour, not concerned with official Police business and without reporting his location to the dispatcher- or shift command, all in violation of Departmental General Orders. During these visits Miss_alleges Officer Smith has physically assaulted, verbally threatened, and on several occasions drawn his departmental issued service revolver on her to enforce his threats. The last such incident being less than two weeks prior to this date.
Miss_visited Officer Smith’s residence in Oconee County on June 7, 1977 and removed his departmental issued gun belt and service revolver from his private vehicle. Miss _fired Officer Smith’s service revolver six times, three rounds of which struck Officer Smith’s private vehicle and upon leaving the premises Miss _took the departmental issued gun belt and revolver with her. Officer Smith failed to report the above in violation of Departmental General Orders.
CONCLUSIONS:
That officer Willie R. Smith has maintained an affair with Miss_for a period of approximately three years. That Officer Smith renewed this affair approximately one month after he was shot in her apartment in violation of Departmental Rules & Regulations I. A. and I. A. 4. — Rules Governing Orders and Commands.
That Officer Smith has visited Miss _at her residence in an on duty status, not on official business, on sev[1375]*1375eral occasions without advising the dispatcher or shift supervisors of his whereabouts in violation of Departmental Rules & Regulations II. E. 6.— Responsibilities of Members (members are prohibited).
That Officer Smith failed to report Miss_taking his gun and gunbelt from his privately owned vehicle in violation of Departmental Rules & Regulations III. F. — Responsibility of Members.
That Officer Smith stated before the Promotion Review Committee that he was not ‘running around’ on his wife in violation of Departmental Rules & Regulations II. A., II. A. 1. and II. A. 2. That Officer Smith’s involvement with Miss _is in violation of general order 76-4 Rules & Regulations — Conduct Unbecoming an Officer and City of Athens Merit System Section VIII. A. 1. f.(1), (6), (9).” Plaintiff’s Exhibit 6.
446 F.Supp. at 829-31.
Based on the Wallace memorandum and the trial testimony, the district court found that:
the sole cause of Officer Smith’s dismissal was his continuing to have an extra-marital affair after being commanded by Chief Price to refrain from doing so. The other conclusions were inserted by Major Wallace and adopted by Chief Price only to buttress this principal conclusion; in and of themselves they would not have been cause for dismissal. Neither Chief Price nor the Personnel Board would have decided to dismiss him for those reasons had he not continued to run around on his wife.
446 F.Supp. at 833. The district court further found that Officer Smith’s affair was protected activity under the first amendment guarantee of freedom of association and the constitutional right to privacy, citing, inter alia, NAACP v. Alabama, 357 U.S. 449, 78 S.Ct. 1163, 2 L.Ed.2d 1488 (1958) and Griswold v. Connecticut, 381 U.S. 479, 85 S.Ct. 1678, 14 L.Ed.2d 510 (1965). The district court held that because the City failed to meet its burden of showing that Smith’s protected conduct substantially and materially impaired his usefulness as a police officer, his dismissal constituted a deprivation of his constitutional rights. Turning to the issue of the facial constitutionality of the rules and regulations, the district court determined that the regulations were unconstitutionally vague and overbroad in their entirety. The district court awarded Officer Smith reinstatement, back pay, allowances and attorney’s fees, and, in addition, permanently enjoined the Police Chief and the Personnel Board from utilizing the City Merit Rules and the Police Department Regulations to regulate the conduct of anyone. We reverse.
Upon careful examination of the trial record and the district court’s opinion, it is clear to us that the district court viewed this case as one primarily concerned with a government employee’s right to freedom of association within a zone of privacy. We have determined, however, that the question whether an adulterous relationship is protected activity under the Constitution need not be reached. Assuming without deciding that the extramarital affair in which Smith engaged is protected by the first amendment right to freedom of association or the constitutional right to privacy,2 we hold that Officer Smith’s dismissal was not constitutionally improper.
The Wallace memorandum and the trial testimony establish that the City alleged five reasons for Officer Smith’s discharge:
(1) Smith’s continuation of the affair after Chief Price’s order not to do so, in violation of the rules requiring adherence to lawful orders;
(2) Smith’s visits to the woman’s home while on duty without notifying the police dispatcher, in violation of the rule against loitering while in uniform;
[1376]*1376(3) Smith’s failure to report the taking of his police gun and gunbelt, in violation of the rule governing proper care of departmental equipment;
(4) Smith’s false statement before the Promotion Review Board that he was not “running around” on his wife, in violation of rules requiring loyalty and accountability, and prohibiting conduct which would bring the department into disrepute; and
(5) Smith’s total involvement with the woman, in violation of rules prohibiting conduct unbecoming an officer, immoral and unethical conduct, and failure to comply with rules and regulations of the City.
Smith asserts that he has a constitutionally protected right to engage in a relationship involving extramarital sexual activity. Thus, he argues that the City could not constitutionally discharge him for asserted reasons 1, 4 and 5 — his involvement in the affair, his continuation of the affair after being ordered not to do so, and his false statement concerning the affair. Smith does not seriously contend, however, that a police officer has a constitutionally protected right to engage in otherwise prohibited conduct simply because he is engaged in an extramarital affair. Thus, he makes no colorable claim that the city is constitutionally prohibited from discharging him for asserted reasons 2 and 3, and an aspect of asserted reason five3 — his visits to a private residence without notifying the police dispatcher, his failure to report the theft of his police gun and gunbelt, and his involvement with guns and gunplay. Rather, Smith contends and the district court ruled that the true basis for the firing was the fact that he was engaged in an extramarital affair, and that the constitutionally permissible reasons for the firing advanced by the City would not have led to his dismissal in the absence of the affair.
The proper legal framework for resolution of the question whether termination of employment was “caused” by a plaintiff’s participation in protected activity was established by the Supreme Court in Mt. Healthy City School District Board of Education v. Doyle, 429 U.S. 274, 97 S.Ct. 568, 50 L.Ed.2d 471 (1977). Under Mt. Healthy, when a dispute arises concerning whether a discharge was effected pursuant to a permissible or an impermissible reason, the plaintiff has the burden to show (1) that his conduct was constitutionally protected, and (2) that this conduct was a “substantial” or “motivating” factor in the termination decision. Id. at 287, 97 S.Ct. at 576. If that burden Is met, the burden of persuasion shifts to the defendant to prove by a preponderance of the evidence that it would have reached the same decision without regard to the protected conduct. In this case, the district court, applying Mt. Healthy, found that the sole reason for the discharge was the continuation of the affair, and that Officer Smith would not have been fired for the other reasons asserted by the City in the absence of the protected activity.
Though we agree with the district court that the nature of the extramarital relationship was a “substantial” or “motivating” factor in the decision to fire Smith, and we assume for purposes of this discussion that the relationship itself was constitutionally protected, we reject as clearly [1377]*1377erroneous 4 the district court’s finding that Officer Smith would not have been fired without regard to the protected activity because, although there is evidence to support it, after reviewing all the evidence we are “left with the definite and firm conviction that a mistake has been committed.” United States v. United States Gypsum Co., 333 U.S. 364, 395, 68 S.Ct. 525, 542, 92 L.Ed. 746 (1948).
In evaluating the sufficiency of the permissible reasons asserted for the firing under Mt. Healthy, we begin with recognition of the fact that record testimony established that each of the three permissible reasons were significant, dismissible offenses under the City Merit System Rules and the Police Department Regulations. Section VIII A 1(f)(9) of the City Merit System Rules provides that “[fjailure to comply with published rules, regulations, or ordinances of the City or any department thereof” justifies dismissal “when alternative personnel actions . . would not be deemed sufficient, appropriate or in the best interest of the City Service.” Each of the three behaviors which were the basis for the permissible reasons asserted for the firing were prohibited by a published rule or regulation of the Police Department, and were thus dismissible offenses.5 It is important to note that each offense with which Smith was charged was significant in and of itself. Police officers in Georgia are charged with preservation of public order, the protection of life and property, and the prevention, detection, or investigation of crime. Ga.Code Ann. §§ 78-901, 92A-2102(d) (Supp.1979). It is hardly surprising that Chief Price considered Smith’s involvement in two separate “not-in-the-line-of-duty” incidents resulting in breaches of the peace to be incompatible with the duties and responsibilities of a police officer under Georgia law and worthy of sanction as conduct unbecoming an officer.6 Smith’s failure to report the theft of his gun and gunbelt was likewise a significant offense, for the theft posed the very real danger that persons or property might be further damaged by the gun, particularly since it was in the hands of a woman who had recklessly discharged it once already. Finally, Smith’s on-duty visits to the woman’s house without notifying the dispatcher, especially when viewed as a continuing course of conduct, amounted to a major breach of the rules, for by failing to notify the dispatcher of his location, thereby rendering himself unreachable by radio, Officer Smith placed himself, the public and fellow police officers in a position of potential peril. Thus, both the serious nature of Smith’s offenses and the fact that each offense was punishable by dismissal was clearly established at trial.
The next critical indicator that Officer Smith would have been fired without regard to his participation in what we assume for purposes of analysis to be protected activity is contained in the testimony of Major Wallace and Wilbur Jones, Chairman of the Personnel Board. Though he admit[1378]*1378ted that the extramarital sexual relationship was a major reason for the dismissal, Major Wallace testified that it was not the only cause. Rather, Wallace’s testimony, taken as a whole, indicates that the constitutionally permissible reasons for the firing played just as important a role in the dismissal as the constitutionally impermissible reasons.7 In discussing the reasons for the discharge, Wallace testified as follows:
MR. GALIS (attorney for defendants):
Q Mr. Wallace, if you will, explain one thing for.us please. To the best of your knowledge and based on your recommendations, has the discipline in this case been administered solely because there has been an affair with another woman?
A No sir.
Q Has it been administered because that affair has on two separate occasions erupted publicly and in such a fashion as to directly involve the Police Department ?
A Yes sir.
Q And in investigating this last incident and in talking with Officer Smith in that investigation going back in time and finding out from Officer Smith what his activities were between the incident back in the early part of ’76, and his activities up to June of ’77, did you discover that because of his affair he had been neglecting certain duties as a police officer ?
A That’s correct.
Q Are those the factors, basically, that prompted the disciplinary action as far as you were concerned ?
A And disrepute on the Department by people who were aware that Willie’s car was shot up, his windshield broken out, people at the bank knew that he had been at the social event. The people in general knew what this affair had ended in on this occasion.
(Emphasis added).8 Moreover, the testimony of Wilbur Jones reveals that the Personnel Board’s decision to uphold the dismissal was largely based on Smith’s failure to report the theft of his gun. According to Jones, the Board was especially alarmed because “she probably could have shot somebody else, shot [Smith’s] wife or something.”
In addition to the direct testimony concerning the reasons for the discharge, there are other signs that Officer Smith would have been fired for the constitutionally permissible reasons in any event. First, undisputed testimony established that neither the first nor the second departmental investigation was undertaken until the department was notified that a shooting had taken place. Second, three witnesses testified that to their knowledge the police department had never fired anyone for engaging in an extramarital sexual relationship. Taken together, these two pieces of information tend to show that the police department was more concerned about Smith’s involvement in gunplay, his neglect of duty, and his failure to report the theft of his gun [1379]*1379than it was with the extramarital sexual relationship itself. Third, the fact that the Wallace memorandum, which explained the results of the investigation and detailed the reasons for the firing, listed as a reason for discharge each offense upon which the police department relied at trial to justify the firing militates in favor of the view that those reasons were not conjured up after the fact as rationalizations for a decision actually made on the basis of the affair.
In light of all of the evidence, we are left with the definite and firm conviction that the district court’s Mt. Healthy ruling was mistaken. In our view, the district court’s conclusion that Officer Smith would not have been discharged without regard to his involvement in an extramarital relationship “does not reflect the truth and the right of the case.” Armstrong Cork Co. v. World Carpets, Inc., 597 F.2d 496, 501 (5th Cir.), cert. denied, - U.S. -, 100 S.Ct. 277, 62 L.Ed.2d 190 (1979). Rather, we conclude that the constitutionally permissible reasons for the firing are “both true and a sufficient basis for [the dismissal], such that the same decision would have been made in the absence of constitutionally protected expression.” Love v. Sessions, 568 F.2d 357, 361 (5th Cir. 1978).9 Therefore, we hold that the discharge of Officer Smith was constitutionally permissible.10
Having determined that the police department acted constitutionally in discharging Officer Smith, we can briefly dispose of the other issues involved in this appeal. Agreeing with Officer Smith’s claim that the City Merit System Rules concerning dismissal and all of the Police Department Rules and Regulations were vague and overbroad on their face, the district judge struck them down in their entirety. We reverse. In order to meet he hurdle of the Article III “case or controversy” justiciability requirement, a plaintiff must show that he has suffered some threatened or actual injury resulting from the actions of the defendant. See, e. g., Warth v. Seldin, 422 U.S. 490, 498-99, 95 S.Ct. 2197, 2204-2205, 45 L.Ed.2d 343 (1975). In the case of regulations governing speech or conduct, a threat of interference with rights of the plaintiff beyond that implied by the mere existence of the regulations must be shown. United Public Workers v. Mitchell, 330 U.S. 75, 90-91, 67 S.Ct. 556, 565, 91 L.Ed. 754 (1947). Officer Smith’s challenge to the regulations which were not asserted as a basis for his discharge is nonjusticiable because he has suffered no injury from them beyond the fact that they exist; Smith has never claimed that he [1380]*1380desired to engage in activity violative of those regulations. Similarly, because Smith would have been dismissed in any event and, therefore, no injury resulted from application of the regulations which we classified above as impermissible reasons for the firing, no justiciable case or controversy exists with respect to them. Finally, we decline to address the facial vagueness and overbreadth of the regulations which were' the cause of Officer Smith’s dismissal, because we are convinced that the regulations are not substantially vague or overbroad “judged in relation to [their] plainly legitimate sweep.” Broadrick v. Oklahoma, 413 U.S. 601, 615, 93 S.Ct. 2908, 2918, 37 L.Ed.2d 830 (1973). See also Young v. American Mini Theatres, Inc., 427 U.S. 50, 59-60, 96 S.Ct. 2440, 2446-2447, 49 L.Ed.2d 310 (1976).
Therefore, the judgment of the district court is REVERSED with directions to enter judgment for appellants.