00538nam 2200169z- 450 9910717433703321(CKB)4970000000052365(EXLCZ)99497000000005236520240129c2015uuuu -u- -engSpace situational awareness : status of efforts and planned budgetsU.S. Government Accountability OfficeWashington, DCSpace Situational AwarenessDOCUMENT9910717433703321Space situational awareness3499808UNINA