Manny Koch

 is the leader, or the only remaining member, of a search party that set out from Canterbury Commons looking for Cheryl.

The Lone Wanderer will unfortunately always be too late to rescue Manny.

Bug
Manny Koch may be quite alive and very hostile to the player if the Super Mutant camp was cleared and the Behemoth trigger activated prior to progressing through the quest. In this case the player has no choice but to defend himself against the woefully underequipped Manny.