from the city centre, the VC seized the Thảo Điền area at the eastern end of the bridge and attempted to seize the bridge but were repulsed by the ARVN 12th Airborne Battalion. As Bien Hoa was falling, General Toan fled to Saigon, informing the government that most of the top ARVN leadership had virtually resigned themselves to defeat. At 18:06 on 28 April, as President Minh finished his acceptance speech three A-37 Dragonflies piloted by former Republic of Vietnam Air Force (RVNAF) pilots, who had defected to the Vietnamese People's Air Force at the fall of Da Nang, dropped six Mk81 250 lb bombs on Tan Son Nhut Air Base damaging aircraft. RVNAF F-5s took off in pursuit, but they were unable to intercept the A-37s. C-130s leaving Tan Son Nhut reported receiving PAVN .51 cal and 37 mm anti-aircraft (AAA) fire while sporadic PAVN rocket and artillery attacks also started to hit the airport and air base. C-130 flights were stopped temporarily after the air attack but resumed at 20:00 on 28 April. At 03:58 on 29 April, C-130E, #72-1297, flown by a crew from the 776th Tactical Airlift Squadron, was destroyed by a 122 mm rocket while taxiing to pick up refugees after offloading a BLU-82 at the base. The crew evacuated the burning aircraft on the taxiway and departed the airfield on another C-130 that had previously landed. This was the last USAF fixed-wing aircraft to leave Tan Son Nhat. At dawn on 29 April the RVNAF began to haphazardly depart Tan Son Nhut Air Base as A-37s, F-5s, C-7s, C-119s and C-130s departed for Thailand while UH-1s took off in search of the ships of Task Force 76. Some RVNAF aircraft stayed to continue to fight the advancing PAVN. One AC-119 gunship had spent the night of 28/29 April dropping flares and firing on the approaching PAVN. At dawn on 29 April, two A-1 Skyraiders began patrolling the perimeter of Tan Son Nhut at until one was shot down, presumably by an SA-7 missile. At 07:00 the AC-119 was firing on PAVN to the east of Tan Son Nhut when it too was hit by an SA-7 and fell in flames to the ground. At 06:00 on 29 April, General Dũng was ordered by the Politburo to "strike with the greatest determination straight into the enemy's final lair." After one day of bombardment and general