Imagine if someone found a straight edge razor blade, i.e. what goes in a box cutter. I don't know how such things could be stopped, sans a thorough disassembly inspection of everything, so long as they are thin enough to be packed tight up against a more massive piece of innocent metal.
Of course with today's consciousness, especially on a flight with that many people, anyone who pulled out a box cutter would be on the floor in two seconds flat.
THIS ONE WAS RELEASED ABOUT 40 minutes ago
Specific threats sparked security
December 31, 2003
By ERIC LICHTBLAU New York Times
WASHINGTON - American authorities in the past week ordered a U.S.-bound flight from Mexico to turn around in mid-flight and imposed extraordinary security measures on at least six other incoming flights because of terrorist concerns, federal officials said Wednesday.
U.S. officials were so concerned about possible attacks on at least five foreign flights that landed in the United States - including one at Dulles Airport outside Washington and several at Los Angeles International Airport - that they took the planes to remote locations away from the main terminals and rescreened the passengers before allowing them to leave.
~SNIP~
http://rutlandherald.nybor.com/News/Story/76697.html