The governor, Eloy Inos, says an extension to the deadline for submissions on the military's draft Environmental Impact Statement is necessary because of the impact of Typhoon Soudelor.
Mr Inos says with a territory-wide cleanup underway to restore essential services damaged by the typhoon last week the community is unlikely to have time to prepare submissions.
The US military plans to use the islands of Tinian and Pagan for live-fire missile training and amphibous landings as part of its expansion into the Asia-Pacific region.
