I was asst. crew chief on 56-0471 from Feb. 1967 to Aug. 1968. This a/c was stationed at Naha AFB, Okinawa. In the 35th Tactical Airlift Squadron (former 35th Troop Carrier Squadron). In the 374th Tactical Airlift Wing. Yes, the bottom was painted Black for "Blind Bat' mission out of Thailand. Was also involed heavily in the air supply of Khe Sanh during the TET offensive of 1968. This aircraft body was at Davis-Mothan AFB, AZ. in 2002. I saw it there while traveling on vacation.