U.S., ROK participate in friendship run Published Oct. 7, 2014 7th AIr Force Public Affairs OSAN AIR BASE, Republic of Korea -- More than 300 United States and Republic of Korea forces as well as their family members participated in a friendship fun run Oct. 4, 2014 at Osan Air Base, ROK. The event featured a half marathon, 10K, 5K, kids' relay and children's race. The run was hosted by the 607th Air Operations Center and its Good Neighbors.