Elliot: What's with the, uh, bulletproof glass here?
Victim's Colleague: We had that put in back in '93 after our sniper attack. A receptionist was shot in the arm.
Another reference to Dr. Tiller. He was shot in both arms on August 19, 1993, a total of five times, by a woman named Shelley Shannon. She was sentenced to 11 years for attempted murder.