ROBERTSON, MARK JOHN Name: Mark John Robertson Rank/Branch: W1/US Army Unit: Troop B, 2nd Squadron, 17th Cavalry, 101st Airborne Division Date of Birth: 18 August 1949 Home City of Record: Detroit MI Date of Loss: 10 February 1971 Country of Loss: South Vietnam Loss Coordinates: 162025N 1070647E (YD257076) Status (in 1973): Killed/Body Not Recovered Category: 2 Aircraft/Vehicle/Ground: OH6A Refno: 1701 Source: Compiled from one or more of the following: raw data from U.S. Government agency sources, correspondence with POW/MIA families, published sources, interviews. Updated by the P.O.W. NETWORK in 1998. Other Personnel in Incident: Joseph R. Pietrzak (missing) REMARKS: SYNOPSIS: WO Mark J. Robertson, pilot, and Sgt. Joseph R. Pietrzak, observer, were flying aboard an OH6A helicopter on a visual reconnaissance mission in Thua Thien Province, South Vietnam on February 10, 1972. The helicopter was hit by heavy 51 caliber machine gun fire in the power compartment and fuel section. It burst into flames and fell vertically and exploded on impact. Other helicopters in the area immediately attempted to land and search the area for survivors, but the crewmen reported that enemy fire and deteriorating weather conditions prevented them from doing so. None of the crews conducting visual searches saw survivors or bodies around the blazing helicopter. Radio frequencies were monitored for a period after that, with no result. Enemy activity in the area prevented further search in the loss area near the Laos border. It was concluded that Robertson and Pietrzak were dead, but their remains were never recovered, and their names are among those counted missing, prisoner, or unaccounted for from the Vietnam war. Since 1975, nearly 10,000 refugee reports have been received by the U.S. Government relating to Americans missing in Southeast Asia, convincing many authorities that hundreds remain alive today. Although Pietrzak and Robertson apparently are not among those said to be alive, one can imagine that they would gladly fly one more mission to help bring their comrades to freedom.