On June 19, 1968, Lassen, then a 26-year-old
Lieutenant, junior grade flying a
UH-2A Seasprite of HC-7 (assigned to the ), embarked on a mission to recover two downed Naval Aviators (from
VF-33, off the ) whose
F-4J plane had been shot down on a night interdiction mission deep inside
North Vietnam. Upon reaching the hilly terrain where the aviators were hiding, Lassen made several attempts to recover the aviators, but dense tree cover, enemy weapons fire and intermittent illumination frustrated his efforts. Lassen turned on the landing lights of the helicopter, despite the danger of revealing his position to the enemy. After the pilots made their way to the helicopter and with his bullet-riddled helicopter dangerously low on fuel, Lassen evaded further
antiaircraft fire before landing safely at sea on board the with only five minutes of fuel left in the helicopter's fuel lines. The account of the rescue was logged as a successful, routine search and rescue mission. LT Lassen became the first Naval Aviator and fifth Navy man to be awarded the Medal of Honor (MOH) for bravery in Southeast Asia (SEA)/Vietnam. He was also only one of four Naval Aviators to be awarded the MOH in SEA (along with CAPT
Michael J. Estocin, then-CAPT
Stephen W. Pless USMC, and RADM
James Stockdale), and the only rotary wing Naval Aviator to be awarded the MOH in SEA. ==Subsequent career==