Gutmann said the US has sent over 100 aircraft and 2,000 military personnel to Europe to take part in the military exercise, which will be held on June 12-23.
"Air Defender 2023 is the largest deployment exercise of allied air power in Europe, in NATO's history. It will demonstrate beyond a shadow of a doubt the agility and the swiftness of our allied force in NATO as a first responder," she said.