PROMPT: By @action  A tourist takes the picture of an assassin just as he kills a passing politician. The assassin sees the flash and realises what has happened. Can the tourist fool the assassin long enough to get away and bring justice?

I started shaking even before I lowered my camera. The assassin, whose photo I'd snapped as he fired, had just pointed at me and narrowed his eyes menacingly. He started towards me.

Spotting a ballcap sticking from someone's back pocket, I snagged it. Quickly ducking down, I ran half-bent a few feet, put on the cap, then stood up beside someone, facing the street, pretending to crane with the rest of the crowd to see what was happening.

There were police corralling the crowd, but I wasn't close to any.

I scanned for other options - and met the steely eyes of the assassin! He grinned wickedly and began pushing his way towards me.

No!

I surged forward, ignoring the annoyed cries of the people I pushed aside.

My fingers fumbled on the camera as I extracted the memory card and slipped it into my front jean's pocket.

A big white tent loomed up at the edge of the crowd with a sign saying "Journalists".

Dropping the flap behind me, my eyes darted around the deserted interior. "Damn!" I'd counted on security being inside.

I ran to the back exit just as the assassin came in the front. "You're dead!" he hissed.

Out the back were more onlookers, but no security. They must have rushed off to help with the crowd.

The flashing lights of an ambulance caught my eye and I sped towards them.

"Thank God!" I sobbed. The door was open! If I could get inside, maybe I could lock the door before the assassin got there.

Breath heaving, I raced forward and leapt up, but misjudged the height and fell forward with an "Oomph!" on the ambulance floor. My camera clattered out of my hand to the side.

Ignoring the pain in my shins, I scrambled up and in. When I turned to slam the door shut, the assassin was already there.

Stumbling backwards, I groped behind me and connected with cold, hard metal. Pulling, I found it heavier than I expected. A quick look down revealed an oxygen cylinder.

The assassin started climbing in, pulling the door behind him. "Lots to kill you with here," he promised.

I tried throwing the cylinder but it just rolled along the floor instead. The assassin jumped over it. The tank thunked into the door, swinging it open.

Groping again, I found a bottle and sprayed it.

The assassin screamed and grabbed his eyes.

I spotted a smaller tank on the wall. Snatching it down, I thrust it forward, hitting the assassin square in the face. He flew backwards, landing unmoving on the grass.

A police officer ran up and pointed his gun at me. "Freeze!"

I raised my hands, gasping. "He's the assassin! I have proof!"

They could take me in, as long as they took him too.

WORD COUNT: 500