There are still some missions available. You can visit the OFSS forum
HERE. In that forum you will find a sticky thread with the mission schedule. Take a look at it and post in the "OFSS Project Discussions" thread informing me which mission you'd like to do.
I am closing this thread since we have our own forum now. Please continue OFSS discussions there. If you can't post in the forum then you need to join the group. Visit the group page
HERE and look toward the bottom for a link to join.
Thank you.