Summary: instead hit by an unmanned aerial vehicle UAV called Global Hawk The RQ 4 Global Hawk is a reconnaissance UAV built by Northrop Grumman for the US Air Force and first flew in 1998 Main and nose gear wheels of Global Hawk Numerous photos of the vehicle are available in print and on line sources including views of its landing gear The above pictures show close ups
Image Dimensions: 550 x 400
Image originally found here.