Meet the Wounded Warrior who's gone from the battlefields of Afghanistan to the U.S. Open tennis courts.

After losing his right leg below the knee in 2010 in a land mine explosion, Army Spc. Ryan McIntosh first served as a ballboy in 2012. 

He's now back in New York this summer to work this year's tournament. 

McIntosh, who is still on active duty, said he just worked a match last night and will be on the court again this afternoon.

McIntosh then took Brian and Pete outside the "Fox and Friends" studio to give them a quick ballboy training session. 

Watch the segment above.