ooc: To be fair, it looks like the crossbowmen Readied action to shoot as soon anyone entered the wagon. Since when your readied action goes off your initiative changes to go just before the combatant that triggered it, the crossbowmen should go before me. In any case...
Tam advances cautiously, ready to deflect any incoming bolt with his Force screen.
ooc: move 40 feet forward as a move action, Total defense as standard (AC this round is 25, 26 against one of the crossbowmen)