| AA | |
American Airlines |
| AFB | |
Air Force Base |
| ANG | |
Air National Guard (e.g. DCANG:DC, FANG:Florida) |
| aQ | |
al Qaeda |
| ASCE | |
American Society of Civil Engineers |
| BBC | |
British Broadcasting Company |
| CIA | |
Central Intelligence Agency |
| DOD | |
Department of Transportation |
| DOT | |
Department of Transportation |
| FAA | |
Federal Aviation Administration |
| FBI | |
Federal Bureau of Investigation |
| FEMA | |
Federal Emergency Management Agency |
| HH | |
Hani Hanjour |
| ISI | |
InterService Intelligence (Pakistani intelligence) |
| KSM | |
Kalid Sheikh Mohammed |
| MJ | |
MegaJoule (unit of energy, used in WTC collapse arguments) |
| NCSTAR | |
National Construction Safety Team Act Report (sections of NIST Report) |
| NEADS | |
Northeast Aerospace Defense Sector (of NORAD) |
| NIST | |
National Institute of Science and Technology |
| NMCC | |
National Military Command Center |
| NORAD | |
North American Aerospace Defense Command |
| NSA | |
National Security Agency |
| NTSB | |
National Transportation Safety Board |
| NYFD | |
New York Fire Department |
| NYT | |
New York Times |
| OBL | |
Osama Bin Laden |
| OMIC | |
Operations Manager in Charge (at FAA Center) |
| PEOC | |
Presidential Emergency Operations Center |
| PM | |
Popular Mechanics |
| PNAC | |
Project for a New American Century |
| ROC | |
Regional Operations Center (FAA) |
| SOD | |
Secretary of Defense |
| SRFM | |
(fire protection coating) |
| UA | |
United Airlines |
| UBL | |
Usama Bin Laden (spelling used by FBI and others) |
| UL | |
Underwriters Laboratories |
| WFC | |
World Financial Center |
| WP | |
Washington Post |
| WTC | |
World Trade Center |
