Marine surprises girlfriend with homecoming and proposal during science experiment

U.S. Marine Capt. Alex Grubbs and his girlfriend Brina Saldivar, an electrical engineer, visited Science Museum Oklahoma on their first date on Oct. 31, 2015. Two years later on Oct. 31, 2017, Brina was back at the museum and thought her Marine was still a week away from returning from his most recent deployment … but he had a BIG surprise in store for her right back where their story began!