Opening scene shows two U.S. Air Force F-105 Thunderchief aircraft taking off in pre-dawn from Vietnam on a bombing mission, in 1966, during the Vietnam War. Next, the F-105s are seen diving and dropping bombs that explode into fire and smoke on the ground. Closeup of a Strategic Air Command (SAC) KC-135 aircraft in flight. It has been modified to serve as as a "Combat Lightning" aircraft that serves as a communication link between the Tactical Air Reporting Center at Monkey Mountain, near Danang, Vietnam and ground radar, airborne radar and any U.S. aircraft operating over North Vietnam. KC-135 "Combat Lightning" crew members are seated in a briefing room at the U-Tapao Royal Thai Navy Airfield, in Thailand. A briefing officer explains their mission, using charts and a map labeled SECRET Noforn (no foreign access) showing Vietnam and the Gulf of Tonkin. The briefer points to an area in the Gulf, and sketches a figure eight, showing where and how the KC-135 should maneuver in a holding pattern during its mission. Crew members rise and leave at the end of the briefing. View of a Strategic Air Command EC-135L that arrived on May 29, 1967, along with another, to support 24 hour "Combat Lightning" operations. Ground crewman directs the EC-135L as it taxis out and then takes off, past a C-130 aircraft holding short of the active runway. (Narrator notes that by the end of July, 1967, there were four "Combat Lightning" C-135 aircraft operating at U-Tapao airfield.) View from above of EC-135L aircraft in flight above clouds, en route to its assigned location over the Gulf of Tonkin. View of radio operator inside the aircraft, who is in radio contact with U-Tapao and the aircraft they are going to relieve. View of map showing their destination figure-eight holding pattern. Radio operator establishes the same contacts used by the aircraft they are relieving, to assure continuity of communications. Remainder of the film contains extended views of the radio operator at his station and of the EC-135 aircraft in flight. Near the end, the crew's Armaments and Electronics Technician is seen pulling a piece of malfunctioning electronic gear from a rack and replacing it with a spare, stored nearby.
U.S. Navy aircraft in Vietnam during Operation Market Time of the Vietnam War. A Vietnamese Navy observer writes down on a pad in his lap. U.S. Navy Lockheed SP-2H aircraft in flight and a winding river below. The SP-2H in flight over a heavy cloud cover. The Vietnamese observer on a radio with an area map in his lap. A crewman works with a practice depth charge. Three U.S. ships underway in the Gulf of Tonkin during underway replenishment. An LST (Landing Ship Tank) and a fleet oiler ship underway. A pilot at the controls in the cockpit. Three ships underway at sea as seen through a window during a fly by. Two crewmen. Lieutenant Commander B.D. Johnson talks over a microphone. A forward observer with a map lying across the lap. Lieutenant Junior Grade Webber looks through binoculars while seated in the bow of the aircraft. Lieutenant Junior Grade Webber works on a navigational chart. Crewmen get ready for 'Gold dust' mail and magazine drop to USS Woodpecker, a patrol boat. USS Woodpecker underway. A smoke marker burns on water off the port side of the ship. A freighter underway at sea. The port side of a merchant ship underway at sea.
U.S. Navy F-4B aircraft of Carrier Air Wing 9 (CVW-9) being launched from deck of USS Enterprise (CVAN-65) in 1966. F-4B on catapult. F-4B launched. Steam rolls down catapult track. Blast fence lowered. Another F-4B taxis onto catapult. Personnel in background. F-4B being launched with after burners. Signal man in dungarees sending message on signal light. F-4B making recovery. F-4B on deck after recovery. Signal man sending message on signal light from rim of signal bridge. Red shirts wheeling bombs under aircraft. Activity on flight deck. Group of red shirted men. Island seen in far background. A-4C aircraft of Heavy Attack Squadron Four (VAH-4), Carrier Wing Five (CVW-5), taxiing over deck. Tow bars stacked. A-4C on deck. Tractor moves by. Aircraft being launched. Men leaving deck. Switch to the personnel on catapult. Steam rolling down the track. Green shirted men and red shirted men watch aircraft recover. Aircraft zips into the scene. F-4B's being lowered on deck edge elevator. Personnel and aircraft on flight deck.