Thriller Idea- Deep impact

For our thriller project we have decided to do base our story on a action orrientated film like 'hunted' and XXX 2 the next level, but still strongly showing conventions of a typical thriller opening sequence eg: gazes', conflict, secret item\object etc.
-for our project the story line shall be: two opposing government agents are looking for an item in an secluded woodland. it starts with a civilian walking through the woods who trips on the secret item hidden in the leaves after which she digs the item up and is intrigued by the contents of it, after she hears people coming and hides, a soldier appears with a gun and looks for the item, meanwhile an opposing agent tries to take out the soldier, a fight takes place leading to one of them getting shot, the walker acts as a shocked witness leaving everything at a cliff hanger.
-we will include a variety of different shot types such as: tracking/panning shot, numerous close up and mid shots, as well as various wide shots, the shots will be done at a variety of angles etc
-we hav'nt yet established a complete shot sequence.