1. Pilot killed, 2 Pa. State Police troopers injured in midair crash at Carlisle Airport  6abc Philadelphia
2. 1 killed in crash between airplane, State Police helicopter  fox43.com
3. Pilot killed, 2 state troopers hurt after small plane and helicopter collide in Pennsylvania  NBC News
4. Two Pennsylvania state troopers injured, airplane pilot dead in ‘violent’ midair collision at Carlisle Airport  ABC27
5. Pilot killed, 2 PSP Troopers hurt after aircraft collision, officials say  NBC10 Philadelphia

Source: Google Finance – Market News