For the war zone: A child, eight or nine years old, finds an army dog and his handler. The soldier, the German Shepherd, and the child fight to keep their lives, and the child, their sanity, as they had never seen the horrors of war. They eventually find the soldier's unit, and several days later, they are extracted.
Hostage: Two fifteen year olds are kidnapped and held for ransom. They turn the tables on their captors, and escape. I don't have as much of a plan for this one.
Detective: A young private detective is struggling with one of their toughest cases, where a Marine has gone missing while on leave. They eventually connect the dots and find the Marine.