Every game so far, when a team-mate is incapacitated, they all shout for help and no-one can find them.
There is no way to identify which player is which, we can see their name showing in the chat area when they use voice chat but there are no names over the player models and the icons on the map/GPS don't have names either.
This is supposed to be a less hardcore version of ARMA3 but still has barriers making it playable, especially as teams are randomly thrown together of players of varying skill and languages.