While a Marine, he also received training from the Airborne School and U.S. Navy SEALs as well as cross-training with the Australian Special Air Service Regiment during the Vietnam War.
Sementara seorang Marinir, dia juga menerima pelatihan dari Airborne School dan Navy SEAL serta pelatihan silang dengan Resimen Pelayanan Udara Khusus Australia selama Perang Vietnam.