Pilots ought to know they need to check their airspace.
In the most recent incident -- which was posted on NORAD's Facebook and Twitter pages -- a Cessna 152 flew about two miles into the restricted space about 8:55 p.m. Sunday before two F-15 fighter jets and an HH-65 Dolphin Coast Guard helicopter intercepted the plane and escorted it to the Lewis University Airport in Romeoville.
In another incident Saturday morning, Humphreys said, another Cessna 152 "barely encroached" into the restricted area and was met by a Dolphin helicopter and escorted to Schaumburg Airport. Read it all at Chicago Trib
