Vent

As the daughter who can't tell her left hand from her right, I’m unlikely to get how to construct a Molotov cocktail and throw it in the air intake vent of an oncoming tank. But my father’s instructions sounds so urgent that I pretend to understand to calm him down.  
     Years later, on a first date, this guy Paul turns out to be a soldier. I ask him about the air intake vent. He says he thinks a grill covers the vent nowadays. He thinks? What kind of soldier doesn't know? Paul flinches. Mostly, he says, he does community relations.

Image: Wikimedia Commons.