From: Hansville, WA, USA
I just tried it again, launching a "RGM-109E Tomahawk Blk IV TACTOM" and was able to change its course using F3. Even with the course change it hit its designated target.
You can also change its course by selecting and moving the individual way points. Did this in the test and the second missile also hit its target.
However, you cannot change the missiles altitude or speed using F2.
“There is no limit to what a man can do so long as he does not care a straw who gets the credit for it.”
Charles Edward Montague, English novelist and essayist
~Disenchantment, ch. 15 (1922)