Airport security for the two flights out of Newark and Washington Dulles had been provided by Argenbright Holdings Ltd, a company which had plead guilty to federal fraud charges in May 2000 because they had hired 1,300 untrained security guards, including several dozens with criminal records, at Philadelphia International Airport. The company is still on probation.
Profiling on people who look Arabic was greatly stepped up after the attack.
September 11, 2001 Terrorist Attack - Full Timeline
Casualties - Missing Persons - Survivors - Give Blood - Personal experiences - Donations
Closings and Cancellations - Memorials and Services - US Governmental Response
Responsibility - Hijackers - World political effects - World economic effects - Airport security
See also: World Trade Center -- Pentagon -- New York City -- Washington, D.C. -- AA Flight 11 -- UA Flight 75 -- AA Flight 77 -- UA Flight 93 -- U.S. Department of Defense -- terrorism -- domestic terrorism -- Osama Bin Laden -- Taliban -- Afghanistan -- collective trauma -- racism -- September 11