However, since it is obvious from the September 11 attacks, a passenger once on the plane can be just as dangerous as a bomb. Therefore, the passenger themselves need to be searched for weapons as well as their carry-on luggage. Passengers have also noticed more security changes. The carry-on luggage is searched more carefully and hand searches of bags are not as uncommon as they once were. Passengers themselves might be searched more carefully with wand and pat down searchers rather then the walk through detectors (Abrams, 2001). Also their vehicles are also checked for bombs upon arriving at the airport even if one is there just to pick up a loved on, each car is checked by a security officer.