 Until a road could be opened from Lae, the Kaiapit area could only be supplied by air and there were a limited number of transport aircraft. Even flying in an airborne engineer aviation battalion to improve the airstrip would have involved taking aircraft away from operations supporting the 7th Division at Nadzab. Moreover, Whitehead warned that he could not guarantee adequate air support for both Kaiapit and the upcoming Finschhafen operation at the same time. However, Herring calculated that the 7th Division had sufficient reserves at Nadzab to allow maintenance flights to be suspended for a week or so after the capture of Kaiapit. He planned to seize Kaiapit with an overland advance from Nadzab by independent companies, the Papuan Infantry Battalion, and the 7th Division's 21st Infantry Brigade.
