 Relations between the Army and RAAF over the use of the helicopters had become increasingly bitter in the preceding months, and were still tenuous despite recent improvements.Jackson requested American assistance, and when the US Army liaison officer responded more favourably, Raw felt no alternative than to accede to the original request, offering to effect the resupply instead.By coincidence, two RAAF Iroquois were available at Nui Dat, having been used for the concert.