Leaving the vehicle as requested, the officer quickly searches it, removing your briefcase. Flicking the case open he sees the rifle nested inside, stands up, and immediately draws his weapon aiming it at you.
"DON'T MOVE! LAY ON THE GROUND, FACE DOWN, NOW!!" he shouts.
The other officers all take aim at you, rushing to move behind cover. You have no choice but to comply.
You are arrested. You have failed your mission.