POLL: Do You Feel Safer Flying Since Bin Laden's Death?

Security is expected to be heightened at airports nationwide Tuesday, including Sea-Tac International Airport, for the one-year anniversary of the killing of al-Qaida leader .

In advance of the anniversary, security has been stepped up at airports in Europe and the Middle East, and federal air marshals have been deployed overseas, according to various reports out of Washington, D.C.

U.S. and European authorities have been warning for the past year that al-Qaida operatives were working to design non-metal explosives that can be surgically implanted so a suicide bomber could get through airport security.

Still, officials with the U.S. Department of Homeland Security insisted that they had seen no strong evidence of an impending terror strike.

"We have no indication of any specific, credible threats or plots against the U.S. tied to the one-year anniversary of bin Laden's death," DHS spokesman Peter Boogaard told ABC News.

This comes as officials at Sea-Tac and other airports have tried to speed up the screening process.

-City News Service