From Doomsday Wiki
From the game
Syntax: RECON [player] MP: 10 The recon spy will report back location ID's of enemy structures and assist you when using the bomb command.
Every housekeeping your Recon spy survives you will get an in game e-mail from "The Spy" with building ID information regarding your enemy. These ID's can be used with the BOMB command for directed airstrikes.