Rethinking and regrouping.
Dorr
Robert F
RF
robertdorr@aol.com
D000060:Accidents, Aviation / Q000517:prevention & control; D001359:Aviation / Q000295:instrumentation; D008891:Military Science / Q000295:instrumentation; D012449:Safety; D012637:Security Measures; D013026:Space Flight / Q000191:economics* / Q000331:legislation & jurisprudence*; D014481:United States