Every home seems to cash flow??

[Jeffrey Gagnon]

Hello everyone, i have recently been looking online to practice putting the numbers together to see if the property will cash flow or not. It seems like most homes that have more than one unit in the area that I am looking will cash flow. I am wondering what I am missing?  am 22 and have yet to buy a property, currently in the Air Force and living in Japan. My plan is when i return to america (Omaha Nebraska area) to buy a 2-4 unit multifamily. Thanks for all your advice in advance!