A new threat just issued by the department of Homeland Security here in washington warning airlines to pay additional scrutiny for the possibility of terrorists attempting to hide explosives hidden in shoes. The warning flights from overseas coming to the United States. Jim sciutto is standing by as well as our brian todd and our National Security analyst peter bergen. Lets begin with jim sciutto. What is the precise information, jim . We always take new warnings seriously, but lets talk act what it is and what it isnt. Its based on new intelligence that terrorists are working on new shoe bomb designs. This is a trette threat that u. S. Intelligence has been watching closely ever since richard reid, the attempted shoe bomber. What we will not see is any new measures as folks are getting onto these flights. Shoes are already required to be taken off, that kind of thing. They wont institute any new measures as a result of this, but they are asking airlines to give additional scrutiny and