Related by context. Frequent words. (Click for all words.) 60 Airlines Flight 59 twin towers 57 airliners 57 jetliners 55 Twin Towers 55 hijackers 52 commercial airliners 51 terrorist attacks 49 Shanksville Pa. 48 airliner 46 planes 44 jetliner 44 USS Cole 43 Moussaoui 43 Shanksville 42 hijacked 41 WTC 41 al Qaida operatives 41 Flight 40 bombers 40 suicide bombers 40 airplanes 39 plane 39 pre-#/# 38 Zacarias Moussaoui 38 mastermind Khalid Sheikh Mohammed 38 aircraft 38 jumbo jet 38 jumbo jets 38 Airways Flight 37 terrorists 37 Khalid Sheikh Mohammed 37 Al Qaeda operatives 37 LaGuardia Airport 37 Israeli warplanes 37 synagogues 37 Bali bombings 37 jets 37 warplane 37 plotters 36 hijackings 36 terror 36 suicide attackers 36 al Qaeda operatives 36 bin Laden 36 foiled plot 36 National Counterterrorism 36 aircrafts 36 airplane 36 Bali bombing 35 box cutters 35 Detroit bound airliner 35 Sears Tower 35 terrorist 35 Pan Am 35 Pan Am Flight 35 Osama bin Laden 35 Pearl Harbor 35 cruise missiles 35 shoe bomber 35 turboprop 34 Khalid Shaikh Mohammed 34 Lower Manhattan 34 warplanes 34 George Pataki 34 enhanced interrogation techniques 34 fighter planes 34 Pentagon 34 Lidle 34 homegrown terrorists 34 Bin Laden 34 attacks 34 hijacker 34 suspected terrorists 34 bombing 34 harsh interrogation techniques 34 Trade 34 airstrike 34 liquid explosives 34 Islamic extremists 34 suicide bombings 34 Teterboro Airport 34 fighter jets 34 Smolensk 34 Ground Zero 34 Umar Farouk Abdulmutallab 33 Boeing #-# 33 bomber 33 hijack 33 Zubaydah 33 Learjet 33 Lockerbie Scotland 33 hijacking 33 subway trains 33 al Qaeda 33 Binalshibh 33 Airbus A# 33 JFK Airport 33 plane crashed 33 Suicide bombers 33 Paul Greengrass