In California, first tests of an army-sponsored craft that can rotate its propellers to vertical position for an upright takeoff. A very strange looking un-completed air craft. CUS - The control panel. MCUS - The plane is tied down and two technicians are holding it while there's a technician at the controls of the test bed. CUS - The engines of the test bed. MS - All the technicians well satisfied by the running operations of the test bed plane,