Welcome to Explorer, a modification for Fallout: New Vegass that aim to expand the original game with a lot of new areas, items, weapons, quests and much more. As the name suggest the mod is focused on exploring discovering new places that are not tied with the main quest.
The Perk Freeman will increase lockpick and melee damage of 15% while holding a crowbar. The perk can be unlocked after level 6.
The name is clearly a tribute to Gordon Freeman.