OCHCO     Office of the Chief Human Capital Officer
OCSO     Office of the Chief Security Officer
OEF     Operation Enduring Freedom
OHA     Office of Health Affairs
OIF     Operation Iraqi Freedom
OMB     Office of Management and Budget
OPM     Office of Personnel Management
PSD     Personnel Security Division
PTSD     post-traumatic stress disorder
SES     senior executive service
START     National Consortium for the Study of Terrorism and Responses to Terrorism
TSA     Transportation Security Administration
USCG     U.S. Coast Guard
USCIS     U.S. Citizenship and Immigration Services
USSS     U.S. Secret Service

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