There was a realistic-looking replica of a suicide vest found in a checked bag at an airport in El Paso. A block of inert explosives was discovered in a carry-on bag at an airport in Florida. Hand grenades were confiscated from luggage at airports all over the country. These, along with 3,957 firearms, were among the items discovered agents with the Transportation Security Administration discovered at airport security checkpoints in 2017. In its “TSA Year in Review” report, the agency said a “record-setting” number of firearms were found in carry-on bags.