Johnson v. State

Procedural entryThis page is a short order in Johnson v. State. Read the opinion of the Court — 457 Md. 513
Court of Appeals of Maryland·Decided February 21, 2018·No. 6/17·Published

Opinion

Martaz Johnson v. State of Maryland, No. 6, September Term 2017. Opinion by McDonald, J.

Evidence – GPS data – Expert Witnesses. The State introduced data derived from a GPS device carried by the defendant as part of his employment and kept by his employer in the ordinary course of business. That data indicated an itinerary consistent with the testimony of the victim of the offense. The data, which would be understandable to a lay juror based on common experience, was admissible in evidence without the need for foundation testimony by an expert concerning the operation of, and science underlying, the GPS device.

Circuit Court for Baltimore City Case Nos. 114094009 thru 114094013 Argument: September 12, 2017 IN THE COURT OF APPEALS

OF MARYLAND

No. 6

September Term, 2017

MARTAZ JOHNSON

V.

STATE OF MARYLAND

Barbera, C. J.,

Greene

Adkins

McDonald

Watts

Hotten

Getty,

JJ.

Opinion by McDonald, J.

Adkins and Watts, JJ., dissent.

Filed: February 21, 2018

A factfinder at a trial applies common sense drawn from shared human experience to the evidence to reach a fair determination of the facts. Some evidence, however, is beyond the common experience of most people. Expert testimony may be necessary for the factfinder to decide the significance of such evidence.

Expert testimony is often required to explain scientific or technical matters. But expert testimony is not required simply because one can explain a matter scientifically. For example, a jury can be expected to readily understand the significance of testimony that a clock or a thermometer displayed certain numbers without need for an expert to explain the scientific phenomenon that underlies the thermometer or the engineering that powers the clock. But the jury will need an expert to understand the significance of an opinion that two biological samples “match” based upon a statistical analysis involving DNA evidence.

While common sense does not change, common human experience does. A technical marvel of an earlier time may become the everyday tool of the contemporary person. This case presents the question whether location information from a GPS device is more like numbers read from a clock or thermometer or more like a conclusion reached from the analysis of DNA evidence.

Petitioner Martaz Johnson,1 an officer with the Maryland Transit Administration

1 The indictments, and several other papers filed in the Circuit Court, spelled Petitioner’s first name as “Martez.” On the first day of the trial, the Circuit Court granted the State’s motion to amend the indictments to correct the spelling of Mr. Johnson’s first name to “Martaz.”

(“MTA”) police, was charged with assaulting and raping a young woman shortly after she had been involved in a traffic accident with an MTA bus. According to the young woman, Mr. Johnson had responded to the scene of that accident in his official capacity and drove her home, where the offense occurred. Among the equipment that Mr. Johnson carried that evening as part of his job was a mobile GPS device, which allowed the MTA to keep track of the locations of its officers.

At the trial in the Circuit Court for Baltimore City, the State introduced GPS data from Mr. Johnson’s device that matched the itinerary given by the woman in her testimony at trial. That evidence was introduced by a custodian of records of the MTA police.

While Mr. Johnson’s defense counsel did not appear to dispute that Mr. Johnson had been present at the locations indicated in the GPS data, he objected to the Circuit Court’s decision to admit that evidence on several bases. In this appeal, Mr. Johnson argues that the State should have presented expert foundation testimony concerning GPS devices as a prerequisite to the admission of such evidence.

The Court of Special Appeals, relying on one of its prior decisions,2 held that a lay juror could understand the significance of GPS data without expert help and that it was not necessary for the State to present expert testimony on GPS devices and data. We agree with the Court of Special Appeals.

2 Gross v. State, 229 Md. App. 24 (2016), cert. denied, 451 Md. 259 (2017).

I

Background

To provide the context in which the legal issues before us arise, we summarize the key testimony at trial and the procedural path of this case.

The Accident and its Immediate Aftermath The victim of the alleged offenses was a 28-year-old woman whom we shall refer to as Ms. K.3 After going out with a female friend on the evening of March 12, 2014, for dinner, drinks, and dancing, Ms. K. was driving home in the early morning hours when her car was struck by an MTA bus at the intersection of Central Avenue and Monument Street in Baltimore City.

MTA police officers responded to the scene of the accident.4 Mr. Johnson was one of those officers. Ms. K. testified that Mr. Johnson told her she should not be driving any more that evening; she agreed to refrain from doing so because she had been drinking. According to Ms. K., Mr. Johnson instructed her to sit in the back of his police car and said that he needed to “release” her to someone or else he would have to take her “downtown,” which Ms. K. interpreted to mean jail.

3 As the intermediate appellate court chose to do, we substitute an initial for the last name of the alleged victim.

4 The MTA police have concurrent jurisdiction in any political subdivision in which the MTA provides transit service. Maryland Code, Transportation Article, §7-207.

Ms. K. decided to contact the friend she had been out with, who lived nearby, in the hope that the friend would retrieve her and her car. However, Ms. K. was unsuccessful in multiple attempts to reach her friend by phone. Mr. Johnson then drove Ms. K. to her friend’s home and Ms. K. attempted to call the friend from the police car, again without success. According to Ms. K., Mr. Johnson would not allow her to leave the car to knock on the door.

Officer Johnson Takes Ms. K. Home and Remains There Ms. K. testified that, after failing to rouse her friend, she sat crying in the back of the police car. She said that Mr. Johnson, instead of taking her “downtown” as he had originally indicated, then drove her to her own home at 708 North Duncan Street in Baltimore City. According to Ms. K., while they were en route, Mr. Johnson asked her “what are you going to do to make this up.”

Ms. K. testified that, as she entered her home, Mr. Johnson followed her in without being invited to do so. According to Ms. K., Mr. Johnson asked her whether anyone else lived there, and she replied that she lived alone. He then used his flashlight to check whether there was anyone else in the house.

According to Ms. K., Mr. Johnson then assaulted and raped her. Afterwards, she testified, she tried to take a picture of Mr. Johnson with her cell phone without success. Mr. Johnson took the phone from her, made her unlock it, and scrolled through her pictures. He then left the house.

Shortly after Mr. Johnson left her home, Ms. K. called 9-1-1 and reported that she had been raped by a police officer. An ambulance transported her to a hospital where she

underwent a rape kit examination. At that time Ms. K. was reluctant to be interviewed by Baltimore City police detectives because she thought that Mr. Johnson was associated with the Baltimore City police. She spoke with an attorney acquaintance later that day who encouraged her to talk to the detectives. When she was subsequently interviewed by the detectives, she told them that Mr. Johnson was the officer who had assaulted her.

Mr. Johnson later submitted to forensic testing, which revealed Ms. K.’s skin cells on the shaft of his penis.5 The Charges Mr. Johnson was charged in the Circuit Court for Baltimore City with first and second-degree rape, third and fourth-degree sex offenses, first-degree assault, two counts of second-degree assault, first, third, and fourth-degree burglary, reckless endangerment, and misconduct in office.

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