NEW : NASA spokesman : ` ` Nothing major , no hazardous operation ( was ) taking place '' NASA has not indicated what caused him to fall . Rocket - arm engineer was working on another section of the pad , his spokesman says . The contract worker fell while preparing space shuttle Endeavour for its final launch . Counseling and assistance are being provided to workers , NASA says .
NEW : NASA spokesman : ` ` Nothing major , no hazardous operation ( was ) taking place '' Rocket - arm engineer was working on another section of the pad , his spokesman says . The contract worker fell while preparing space shuttle Endeavour for its final launch . Counseling and assistance are being provided to workers , NASA says .