Police Explosives Class; Telstar Footage; Helicopter Forestry Work

silent: large group of men and policemen walk across field, Agate Lake area / explosion in distance / pan across men, pan down to shallow hole in ground, they examine remains of bomb / / black and white footage on color stock, completely faded to red, intermittent sound: Alexander Graham Bell, early telephone / teenage boy, women telephone operators (with chatter sound effect) / stringing early telephone wires / bear inexplicably climbs telephone pole / men wave hats to celebrate "San Francisco-New York" telephone line at "Nevada-Utah State Line" / men work on, test Telstar satellite / President Johnson speaks on telephone via Telstar ("Coming through nicely") / animation of signals bouncing off moon--which Telstar didn't do (with spacey sound effect) / / silent: pans across still shots: N5345V helicopter closeup / helicopter over logged-over forest / early keypunch computer operator / man examines surveyor's bearing tree