There are many, many, many 'welcome home!' videos online, where members of the armed forces return from their time abroad to surprise their loving family.
But YouTuber 'porthole1959' has uploaded a very special one indeed - a 'welcome home!' video that sees her sailor son in full uniform photobombing his grandmother.
To quote the video's description:
My son is stationed on the USS John C. Stennis. He has not been home since early July 2011. We surprised his mother during church service. Then went to my mother's for a celebration of her 76th birthday. While she was posing for pictures with two of her great grandkids we had Ellis sneak into the picture.
Her reaction, for want of a better word, is utterly priceless.
And for more wonderful 'welcome home' videos, here's a gallery of them for you below - almost all of which include dogs. Just a heads up for you there.