1.   A security official, speaking on condition of anonymity, said the Israeli army does not plant mines but does use concealed explosives activated by remote control.

2.   Airports in Europe, like those in the United States, are exploring new screening equipment that can detect concealed explosives.

3.   Instead of the black suede high-top sneakers that authorities say concealed explosives and detonation cord, Reid wore prison-issue slippers and an orange prison jumpsuit.

4.   A bag in which the man claimed to concealed explosives was later determined to be packed with toys, the source said.