Covers flight objectives during first phase of flight testing on XB-70A (No. 1) and irregularities which occurred during the four flights. Also shows progress of construction on XB-70A (No. 2) scheduled for completion in early 1966. (Shot list to follow.) 1) Shows XB-70A undergoing final checkouts before taxi tests — shows fuel quantity check, fuel transfer and distribution check, engine runup and flight control check. 2) Scenes of XB-70A in low and high-speed taxi tests. 3) MCU’s & CU’s of Col Joseph F. Cotton and test pilot Al White in XB-70A cockpit. 4) Scenes of XB-70A, flight number one, taking off, landing gear malfunction during retraction cycle, aircraft landing and left landing gear burning due to locked brake. 5) Scenes of XB-70A, flight number two, taking off, landing gear retracting and aircraft landing at Rodgers Dry Lake Bed due to hydraulic line failure. 6) Shows XB-70A, flight number three, taking off, damage to painted surfaces and aircraft landing. 7) Scenes of XB-70A, flight number four, taking off and outer wing tips being lowered to 25DG. 8) Construction on XB-70A (No. 2) showing wing being moved and fitted to fuselage, welding wing panels and placement of canards and vertical stabilizers.The appearance of U.S. Department of Defense (DoD) visual information does not imply or constitute DoD endorsement. #AIRBOYD #AvGeek