Members of the Basij paramilitary force stand at a checkpoint in Tehran, Iran, Sunday, March 29, 2026. (AP Photo/Vahid Salemi)

Residents gather near a public bomb shelter after receiving a message alerting about an incoming missile launched from Iran, in Beersheba, southern Israel Sunday, March 29, 2026. (AP Photo/Maya Levin)

Union Station is seen Friday, March 27, 2026, in Washington. (AP Photo/Bill Barrow)

Union Station is seen Friday, March 27, 2026, in Washington. (AP Photo/Bill Barrow)

The Amtrak station in Danville, VA, is seen Friday, March 27, 2026. (AP Photo/Bill Barrow)

This image made from an Associated Press video shows the Virginia countryside, as seen from an Amtrak train, Friday, March 27, 2026. (AP Photo/Bill Barrow)

This image made from an Associated Press video shows passengers boarding the Amtrak Crescent headed towards New York on Thursday, March 26, 2026, in Atlanta. (AP Photo/Bill Barrow)

FILE - This image provided by NASA shows two massive galaxy clusters captured by NASA's James Webb Space Telescope and Chandra X-ray Observatory in Jan. 20, 2025, with areas of possible dark matter indicated in blue. (NASA, ESA, CSA, STScI, CXC; Science: James Jee (Yonsei University, UC Davis), Sangjun Cha (Yonsei University), Kyle Finner (Caltech/IPAC) via AP, File)