Arrow Symbol Analysis

I don't think they quite know what to do with the three of us, particularly me. I have my Mockingjay outfit with me, but I've only been taped in my uniform. Sometimes I use a gun, sometimes they ask me to shoot with my bow and arrows. It's as if they don't want to entirely lose the Mockingjay, but they want to downgrade my role to foot soldier. Since I don't care, it's amusing rather than upsetting to imagine the arguments going on back in 13.

"I brought you this." Gale holds up a sheath. When I take it, I notice it holds a single, ordinary arrow.
"It's supposed to be symbolic. You firing the last shot of the war."
"What if I miss?" I say. "Does Coin retrieve it and bring it back to me? Or just shoot Snow through the head herself?"
"You won't miss." Gale adjusts the sheath on my shoulder. We stand there, face-to-face, not meeting each other's eyes.
"You didn't come see me in the hospital."
He doesn't answer, so finally I just say it.
"Was it your bomb?"
"I don't know. Neither does Beetee," he says. "Does it matter? You'll always be thinking about it."