Ivan Ruiz, 7, a Tiger Cub Scout, cocks his BB gun as nearly 4,000 Los Angeles County Boy, Cub and Adventure Scouts and their adult leaders celebrate a three-day Cen-Ten-O-Ree at Whittier Narrows Recreation Area marking the 100th anniversary of the founding of the Boy Scouts of America. (Allen J. Schaben / Los Angeles Times)
Boy Scout James Anguiano, 10, throws a tomahawk at a target. Other activities at the event included BB gun shooting and pinewood derby. (Allen J. Schaben / Los Angeles Times)
Michael Iezza, 14, a Boy Scout from a Whittier troop, climbs up a tree with a hand-made rope swing. (Allen J. Schaben / Los Angeles Times)
Boy Scout Kevin Touch, 12, from a Whittier troop teams up with another boy to saw a log with a bucksaw. (Allen J. Schaben / Los Angeles Times)
Nick Roque, 18, an Eagle Scout with a Whittier troop, celebrates his tomahawk throw. (Allen J. Schaben / Los Angeles Times)
Boys from a Torrance troop learn to trust one another and follow instructions blindfolded as their leader learns to give instructions. (Allen J. Schaben / Los Angeles Times)
Grant Decatrel, 9, a Webelo Scout with a Torrance pack, aims his wet sponge at human targets. (Allen J. Schaben / Los Angeles Times)
Jared McManigal, 11, a Webelo Scout with a La Mirada pack, aims his bow and arrow on the archery range. (Allen J. Schaben / Los Angeles Times)
