Grenades intercepted at Pittsburgh International Airport - TSA | 20 June 2024 | Two passengers were busted at the Pittsburgh International Airport on Wednesday when they tried to bring a smoke grenade and an inert explosives grenade aboard their respective flights, according to the TSA. TSA spokesperson Lisa Farbstein said agents first came across a man who thought he could pass the security checkpoint while carrying a hand grenade in his bags. Farbstein flagged another incident an hour later, where a customer was carrying an active M18 smoke grenade in their carry-on bag.