Closing sentence from Washington Post's article on the Hegseth-called meeting of hundreds of potentially stranded admirals and generals:
"The timing of the event has been of particular concern: The speech is set for Sept. 30, the last day of the fiscal year. If there is a government shutdown, it could leave key staff stranded in Virginia as military commands across the globe are juggling the security implications of Russia’s war against Ukraine, Israel’s renewed offensive in Gaza and the continued threat to U.S. personnel in the Middle East, where the Houthis and other Iranian-backed militias continue to fire missiles and drones at U.S. interests."
And, yeah, transportation alone will total millions of dollars.