The Double Bomb Symbol Analysis

First I get a glimpse of the blond braid down her back. Then, as she yanks off her coat to cover a wailing child, I notice the duck tail formed by her untucked shirt. I have the same reaction I did the day Effie Trinket called her name at the reaping. At least, I must go limp, because I find myself at the base of the flagpole, unable to account for the last few seconds. Then I am pushing through the crowd, just as I did before. Trying to shout her name above the roar. I'm almost there, almost to the barricade, when I think she hears me. Because for just a moment, she catches sight of me, her lips form my name. And that's when the rest of the parachutes go off.

"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."