"Biden’s surprise 23-hour visit to Ukraine on Monday was the first time in modern history that a U.S. leader visited a warzone outside the aegis of the U.S. military — a feat the White House said carried some risk even though Moscow was given a heads-up."
Sneaking a president from DC to Kyiv without anyone noticing
KYIV, Ukraine (AP) — President Joe Biden’s motorcade slipped out of the White House around 3:30 a.m. Sunday. No big, flashy Air Force One for this trip -– the president vanished into the darkness on an Air Force C-32, a modified Boeing 757 normally used for domestic trips to smaller airports.
apnews.com