When Double is sniffing MRI's he focuses really hard as his life is indeed on the line....physically and sarcasltly.If anything smells close to a explosive device he stops and raises his tall high.One time when he was on the job they got ambushed by a 11 year old Iranian girl wearing a vest with a exploses device glued on it,he ran up to the girl and bit hard down on her neck, killing her before she could detonate the device,saven the men from killing her and from their death.One of Double's main fear is him causing his handler and his fellow comrades death,he would rather die then let them die.Double has faced a lot of life or death situations,all of them he ended up walking away alive.Double has many challenges on the job,he has to sniff up MRI's while watching his back for enemies he even has to listen for vehicles approaching also for any noises in the empty sandy land of Iraq.