A heartwarming video has emerged of a man finding out his wife is pregnant during his Air Force Basic Military Training graduation.

The footage, shot earlier this month near San Antonio, TX, USA, captures the moment he finds a sonogram image of their ten-week-old baby in a birthday card from his wife.

She explained online that she realised she was pregnant just three days after he had left and decided to wait to be reunited with him to announce the news.

On Thursday 09/08/16 I spent all day with husband. It was great. We hadn't seen each other in 7 weeks. I had something important to tell him, but I just wanted to spend one more day just him and me before the big surprise. So the following day, on Friday 9/9/16, after his graduation I gave him a birthday card (his 25th birthday would be the following Sunday 9/18/16 and I wouldn't be around for it.) Inside the card was a sonogram image of our 10 week old baby. I found out I was pregnant 3 days after he left for Air Force Basic Military Training, but I decided not to tell him in writing or over the phone because I wanted to tell him in person. This is his reaction.