MCSs of operator with earphones and microphone as shadow of centrifuge in motion flickers periodically on his face. Shots of movable stairs being raised mechanically. Longer shot of operator at console of accelerator, accelerator swishing across frame. TILT UP to operator as shadows flicker on and off. Profile CS of operator. Shot of accelerator in motion, capsule blurring across frame. MSs of different type of centrifuge whirling, test subject strapped in. Sequence of shots showing test subject being strapped in capsule of centrifuge by operator adjusting controls. Shots of other air personnel sitting and being tested for various reactions. CUs of rapidly moving graph showing lines being formed, of thermometer scale. Shot of technician adjusting flight boots onto pair of feet. Shot of couple of airmen entering compression chamber and being locked in. Interior CU of chamber, airmen adjusting breathing apparatus. CU and MSs of dials on console, of technician watching through glass of chamber, handling controls. CU of subject in centrifuge, of television image of other subject undergoing tests.