Leslie Thompson
Yeoman Leslie Thompson was a Starfleet crew member on the , serving under Captain James T. Kirk. 

Thompson was a member of the landing party that encountered the Kelvan Milky Way Expedition on a class M planet in 2268 on stardate 4657.5. 

To demonstrate his power to Kirk, Kelvan leader Rojan ordered Hanar to reduce Thompson into a dehydrated porous cuboctahedron solid, the size of a Human fist, composed of Thompson's base minerals which represented the "distilled" essence of Thompson's being. Rojan crushed and crumbled the solid in his right hand, killing Thompson, leaving nothing but powdery dust remains on the ground. 

After her death, Kirk found himself unable to get the image of her crushed remains out of his mind. ()

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Starfleet operations personnel
USS Enterprise (NCC-1701) personnel
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Starfleet enlisted personnel