Rep. Trey Gowdy, R-S.C., hammered Secret Service Director Julia Pierson on Tuesday over a 2011 White House shooting, asking her to rehash what a jury had learned about the case in light of new revelations in a Washington Post article.

“Director, I’m actually a big fan of law enforcement and I don’t take any delight in asking the questions I’m going to ask you, but law enforcement are given unique powers in our society and with those unique powers come unique responsibilities,” Gowdy said. “So as I understand it, several agents [in 2011] believed that shots were fired and a supervisor concluded that it was a vehicle backfiring. Even if that were true, given the very small investment of resources, why not investigate the shots fired?”