good point!
they could have been put on diego garcia, and only have added 30 minutes to their flight time. further, they wouldn't need flyover rights, had they done so.
btw, BUFF's can fly over 8000 miles without refueling, and can essentially stay in the air as long as needed. some ops during GW1 put BUFF's in the air for 35 hours, flying to iraq from barksdale LA and back home.
they won't necessarily drop bombs in 6 hours. one order of shock and awe, we deliver... at a time of our choosing.