Golden Gate Knights instructor Alain Block and Gary Ripper, dressed as Darth Vader, demonstrate light saber moves during class in San Francisco.

Golden Gate Knights instructor Alain Block, right, teaches during class in San Francisco.

Jim Collum and other students work on their light saber skills during a Golden Gate Knights class in San Francisco.

Aaron Cheng jumps over a light saber swung by fellow student Starshine Medeiros during a Golden Gate Knights class.

Sophianna Ardinger meditates after a Golden Gate Knights class.

A prospective recruit has his chest measured as part of a fitness test during an Indian Army recruitment drive on the outskirts of Amritsar, India, on Aug. 6.

Prospective recruits run during a fitness test for an Indian Army recruitment drive on the outskirts of Amritsar, India, on Aug. 6.

Prospective recruits run for a fitness test during an Indian Army recruitment drive on the outskirts of Amritsar, India, on Aug. 6.

Prospective recruits jump to grab the bars for a fitness test during an Indian Army recruitment drive on the outskirts of Amritsar, India, on Aug. 6.