"We will definitely get a sense of Finnick’s backstory in Mockingjay, I just don’t want to divulge how, but there are very specific scenes where we learn about his past."
katniss: i want wiress and beetee.
peeta: johanna calls them nuts and volts.
haymitch: okay, who else?
peeta: *does a dramatic "can't believe this crap" turnaround*