Mark Anthony DeShields, a 29-year-old Air Force veteran from West Philadelphia, was killed in Chester, Pennsylvania, on January 27, 2012. At about 4:30 a.m. he left the facility to drive his wife to work and, roughly one block away near 12th and Madison streets outside the Madison Grille, gunfire erupted. Police found him wounded on the sidewalk; he was taken to Crozer-Chester Medical Center and pronounced dead at 5:14 a.m.

Chester police and Delaware County detectives, including Chester Detective Robert Whitaker and Delaware County Detective Edward Kazlo, handled the active homicide investigation and asked the public for information. Little is publicly known about why he was targeted or who was responsible.

If anyone was in the area before dawn on January 27, 2012, or has information about the shooting near 12th and Madison, please come forward.