VNAF Postal History - 6th Air Division Cover 6th Air Division at KBC 6169 Cancel: 1973 Rate: 8 dong paid. Return Address:    KS (Trainee) NG Hoang Huy    P/TMP/HL SD VI KQ (P/TMP Training 6th Air Division)    Trung Doi 3 Khoa 1/73 (3rd Platoon 1st Class 1973)    KBC 6169 Address:    Do Cong Khai    TTI/VC (1st Patrol / VC) KBC 6688    Giang-Doan 40 Ngan Chan (River Interdiction Group 40 Manuscript "To Quoc Khong Gian" means "To Defend the Sky" and "Thu Linh" means "soldier's letter." < Back