For at least the third time, today I have lost connection to the server upon trying to join a Lockdown game. It has also happened a number of times as I was about to start a mission. As soon as I click the button to start the mission, or I'm about to be swept up into the Lockdown game, I instantly lose connection to the server. I'm not the only one who has this issue, I have friends who say the same happens to them on occasion as well.