<prompt> Human: The Thrift Savings plan is the retirement fund offered to military and Department of Defense members. I know they have recently started the Blended retirement system which mirrors 401k. I wanted peoples opinions on the overall system and whether i should invest with this plan or look at an outside company. Any help appreciated. Thanks guys.  <response>: TSP is hands-down the best option to make retirement investments available to ordinary people. The fees are the lowest in the industry and they offer enough fund classes to have a properly diversified portfolio. You should absolutely max out TSP contributions before investing in an outside plan. 