RZESZOW, POLAND - FEBRUARY 06: US Army General Christopher Donahue (L) and Polish Army General Wojciech Marchwica walk together in front of a U.S. Air Force Boeing C-17A Globemaster III transport aircraft at Jasionka Rzeszow Airport on February 06, 2022 in Rzeszow, Poland. Tensions between the NATO military alliance and Russia are intensifying due to Russia's move of tens of thousands of troops as well as heavy weapons to the Ukrainian border, causing international fears of a possible Russian invasion of Ukraine. (Photo by Omar Marques/Getty Images)