If the harriers are in a group use
move group
rather than domove, not that it really matters. Don't see why it shouldn't work. You'll have to think about what the aircraft will do after arriving at the player's location, if they have waypoints they will go back to them, which would be realistic if you want a one pass strike. An alterative would be to move a seek and destroy waypoint to the player's location and use a switch trigger to bring the harriers in at the right moment.
I presume you mean RN1 rather than helo1 in your question..... I'd use "leader RNgrp" rather than the name of the group leader, then it will still work even if something untorward has happened to RN1 himself.
As always in these situations, the best thing to do is try it and playtest, playtest, playtest.