Department of Defense 🇺🇸 @DeptofDefense
When @usairforce Lt. Col. Rob Marshall helped start the #SevenSummitsChallenge in 2005, he had no idea how long it might take to complete. In May, he became the first service member to reach the top of the tallest mountains on each continent: https://t.co/CuxqhaUoRI. — PolitiTweet.org