Mikah Ricafrente, a Boy Scout with Troop 77, and his father, Master Sgt. Nephtali D. Ricafrente, watch as a world scout volunteer assembles wooden knives in the Boy Scouts of America tent at the 23rd World Scout Jamboree in Kirara-hama, Yamaguchi, Japan, August 1, 2015. This is Japan’s second time hosting the World Scout Jamboree, which occurs every four years. The U.S., Mexico and Canada are co-hosting the 24th World Scout Jamboree in 2019, in West Virginia. - Mikah Ricafrente, a Boy Scout with Troop 77, and his father, Master Sgt. Nephtali D. Ricafrente, watch as a world scout volunteer assembles wooden knives in the Boy Scouts of America tent at the 23rd World Scout Jamboree in Kirara-hama, Yamaguchi, Japan, August 1, 2015. This is Japan’s second time hosting the World Scout Jamboree, which occurs every four years. The U.S., Mexico and Canada are co-hosting the 24th World Scout Jamboree in 2019, in West Virginia.