Military sister surprises brother at high school graduation after serving overseas | Video

MILWAUKEE -- A student who had not seen his big sister for his entire senior year of high school was reunited with his sibling in an emotional surprise reunion at his graduation.

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Footage streamed live by Milwaukee Lutheran in Wisconsin shows Kalen Barksdale walking the stage to graduate but staff pretend there's an issue and they can't find his diploma.

"Sometimes the most important deliveries take a little longer than expected, especially when they're coming from so far away," the speaker says from the podium.

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Barksdale's sister then walks out in military uniform at the back of the auditorium, ready to present his diploma.

"To my brother, I will cross the ocean a million times for you. I praise God for bringing me home to you safely for your big milestone," Specialist Barksdale said.

The two then embraced in an emotional reunion.