An army drone flew 600 miles astray then crashed into a tree
 

A routine Military drone test quickly turned into something more bizarre, after the missing aircraft mysteriously turned up ten days later over 600 miles away. Testing the RQ-7 "Shadow" drone in Fort Huachuca in New Mexico, the military lost control...

https://www.engadget.com/2017/03/02/...d-into-a-tree/