Passengers aboard Delta Flight 762 from Atlanta to Chicago got a little more than sloshed drinks when the cabin lights came on at 28,000 feet Sunday. Those with a window seat got quite the view: The piece covering the plane's right engine -- or cowling, as it's called -- had come off. As photos showed, the loose piece then appeared to have struck part of the fuselage. The pilot declared an emergency, and the plane landed safely in Nashville. The 109 passengers aboard the Boeing 717 walked away uninjured. Delta said it's been in touch with passengers with "a gesture of apology." And it's investigating exactly what went wrong.<br/>