Hope they got away and made it to the Lemonade stand after thier mom sacrificed herself for them, but fear they might not have been able to make it.

 

Possibilities:

1. Jamie and Billy are eaten on their way to the rendezvous point.
2. Jamie, Billy and everyone else at the rendezvous point is eaten because walkers are drawn to the helicopter and overwhelm them.
3. Jamie, Billy, the helicopter pilot etc. take off but are killed when they land because there isn't any secure place and walkers are drawn to helicopters.
4. The helicopter pilot finds a safe place to land but Jamie and Billy are taken by a group of humans who kill them (or worse) because they're not old enough to be useful.
5. The helicopter pilot finds them a nice group of folks who protect Jamie and Billy and give them a puppy. And a pony.

If I were a betting person, my money would be on #1.

 

I think they were killed, they were either bitten and reanimated, or devoured.

 

Yeah they're dead. Totally dead.

 

Most likely dead.

1. They never made it to the military area.
2. They were at a military base but got overrun (Lt. Welles in the show told the Governor about the base being overrun)
3. They are in Woodbury or were.
4. They got Sophia'd

 

I would agree, number 1 , they never made it.

 

The walkers had them both for breakfast. Maybe for lunch or dinner, depending on what time of day it was.

 

I always thought that the helicopter in the air was the one we see in Season 1 Episode 1..
Right after Rick leaves the hospital he walks up a hill. On the top of that hill was a military base.. I thought it was that helicopter. So maybe they survived, but they didn't got rescued by the helicopter IMO