But the Air Force already has a two-year stockpile on hand, so no drastic measures are imminent, a defense official told AFP.
Ready for blast-off The retired astronaut Chiao said it would take something much worse than the Crimea crisis to sever relations in space.
"I don't for a second think this is going to happen, but if we and Russia got into a shooting war, that would certainly disrupt operations aboard the station," he said.
NASA also said it foresees no change to relations with Russia in space.
Representatives from Russia, the United States, Canada, Japan and Europe have lived continuously aboard the space station in rotating crews for more than 13 years, and the life of the station was recently extended to 2024.
"We are confident that our two space agencies will continue to work closely as they have throughout various ups and downs of the broader US-Russia relationship," NASA said in a statement to AFP.
On March 25 that relationship will be renewed once more, when one American astronaut climbs into a tightly packed Soyuz spacecraft alongside two Russian cosmonauts.