BuNo 155472 was originally an OV - 10A which flew with VAL - 4 during the Vietnam War .
BuNo 155472 was later transferred to the Marine Corps and upgraded to OV - 10D standard in 1991 .
BuNo 155472 was originally an OV - 10A which flew with VAL - 4 during the Vietnam War , but was later transferred to the Marine Corps and upgraded to OV - 10D standard in 1991 .