Secret Service Director: ‘It’s Difficult To See at Night’

GOWDY: "I want you to imagine there’s a prosecutor in front of the jury. You explain why a housekeeper found evidence of the shooting and your agency did not."
PIERSON: "Representative, again, this case has been prosecuted in federal court and those explanations were made before a federal —"
GOWDY: "--And thank the Lord the explanations were sufficient for a jury. Now, I want you to think of sufficient reconnoissance." 
PIERSON: "The initial shooting occurred at 9 o'clock at night. It’s difficult to see at night."
GOWDY: "How about hear? Can you hear at night?"
PIERSON: "Officers heard the shots fired on constitution avenue. Officers swept the area looking for any type of intruder or injury. It was not known until days later that the shots had struck the upper level, the third floor level of the White House."