When your character gets in sticky situations, the game makes a test against their morale. They can react one of three ways, depending on their personality and training. They will either panic, berserk, or dive for cover. Yup, he tries to stand up again, and most likely he gets shot down again. The worst part of the whole thing is that you have to win every mission without losing a single character.
Nothing is more infuriating that watching a vital character effectively commit suicide.
As it stands right now, they will run to cover, then crouch, THEN shoot any targets of opportunity, until they calm themselves down. But this never happens because they get cut down before they reach cover. Some people might find this flaw so frustrating they would never play the game again. Fortunately you can save your game at any time during a mission, so if you save frequently it really isn't that much of a loss. Still, this really should be addressed, maybe in a patch or something.