It's recently occurred to me that, according to Jesus, there are at least five communities of varying size in the DC area. And for what must have been at least a year, Aaron and Eric were tasked with recruiting and evaluating survivors to join The Safe Zone. So my question is, why didn't Aaron or Eric ever encounter these communities before they met Jesus? They were shown traveling outside the city limits, and were known to be gone for days at a time, so they clearly covered enough ground to have run into them at some point. Not knowing where or what to look for would've been an issue, but it just seems unlikely that, with DC being as populated as Jesus has described, that they would never have encountered members of The Hilltop, The Saviors, The Kingdom, or the others we haven't seen yet. My instinct is that Kirkman just hadn't thought of it, but I hope I'm wrong.