It needs to be escorted by an f-18. There is a small area they can meet in. It is from 875-900 miles away. I need to find what time the f18 can leave so that it meet in the area of 875-900. the speed of a c-17 is 518mph and the speed of an f18 is 1190mph. I need to find the earliest time it can leave and the latest time to make that window.