D. in aerospace engineering and wrote a thesis on insectlike drones, some troops insist that they get the same robot back not a replacement unit.

WSJ: In the Afghan War, a Little Robot Can Be a Soldier's Best Friend

Artificial hearts are nothing new: AbioMed implanted its first replacement heart unit in 2001, and as far back as the 1980s the considerably more cumbersome Jarvik 7 was unveiled to the public.

FORBES: Magazine Article

Not long after the last such session, the president of Allied's North American replacement car-parts unit got yanked from his post.

FORBES: Bleeding arm, but no bleeding heart

The ARTAS is used in conjunction with a hair replacement technique known as Follicular Unit Extraction, or FUE.

FORBES: Hair Transplant Robot Gets FDA Clearance

Listen to Lin praising the backup unit led by his deposed replacement, Baron Davis.

WSJ: Jason Gay: Meet the Cuddly New York Knicks

Beyond that, if my recommendations are approved, that unit's departure will be followed by the withdrawal of a brigade combat team without replacement in mid-December, and the further redeployment without replacement of four other brigade combat teams, and the two surge Marine battalions in the first seven months of 2008, until we reach the pre-surge levels of 15 brigade combat teams by mid-July 2008.

NPR: Petraeus, Crocker Brief Congress on 'Surge'