Deployed air refueling personnel and equipment to provisional wings in Southwest Asia, August 1990 - February 1992.
Like his brother, Seán sided with the provisional wing in the split of 1970.
The arrangement of two groups instead of three in the two following provisional wings meant a third fewer guns available to each for their mutual defense and made them more likely targets.
The last provisional wing in the task force was left without any fighter protection at all.
It was activated as a provisional wing on 30 March 1955 and given permanent status on 8 July 1955 at McClellan AFB, California.
Despite this, after the split of 1970, he rejoined the provisional wing of the party, and became an early editor of Republican News, but came into conflict with the party leadership.
In the split of 1970, he supported the provisional wing, remaining Vice-President.
In the split of 1970, Grogan supported the provisional wing, remaining on Sinn Féin's Ard Chomhairle.
It fields a provisional airlift wing or group headquarters (when required) to command airlift resources as units in support of contingencies or exercises.
The provisional wing of the I.R.A. became a significant force because the beleaguered Catholic population accurately felt itself defenseless and abandoned.