If the US attacks Iran it is unlikely that any US service people will even be injured. Iran can launch terror attacks from its proxies, but Iran lacks the ability to defend its military or its country from a sophisticated air based attack.
There are thousands of US servicemen just like these guys all over the ME. The Iranians and their proxies can devastate every one off those bases. Every U.S. sailor in the eastern Mediterranean, Red Sea, Gulf of Aden and Persian Gulf are in severe jeopardy of Iranian missiles. Iran has hypersonic missiles. Don’t you understand what that means?