It means he's on missions. It carries and brings messages. Messenger, spokesperson, communicator, representative.
1. person sent to a place to carry a message, address an issue or mediate in a situacion.2 channel or duct used to evacuate waste water of a population in a sewage treatment plant, a river or the sea.
Messenger that carries people news need to know. It is also the person in charge to carry news, organize them, elavorar commercial messages and propongarlas