Nothing is known of the mile marker's history before the outbreak.
Suddenly, they are contacted by Charlie and Alicia on the radio.
Alicia tells them she found the channel from the box. Morgan tells her to wait at the mile marker and that they are gonna pick them, when suddenly, Martha radios both of them and tells Morgan, "I gave you the chance to be strong."
Morgan tells her he'll continue to find the people they're looking for until they find and help her. Sarah spots Al's SWAT truck appear behind them. Panicked, Morgan radios Martha to ask what she's doing and she tells him, "You lose people... You lose yourself." Morgan tells the group to get down just as the woman pulls the truck beside them, opens the gun hatch and opens fire.
A shocked Alicia and Charlie are left wondering what happened.