 We decided to put in the patch all things that are important to us. We put our names and our national flags, because we wanted to show that we come from different countries. And then we put produce symbols. So we put the engineering fountain, the profile of the fountain over Mars. And we put the Neil Armstrong footprint on Mars collar, because of course we are very proud of what Purdue alumni achieved. And we put two stars to remember that besides the seven crew members, we had two backup members. And then we put the Mars collar, because we know that what we're the Mars flag collar in the background, because we know that what we are doing will go towards the future human exploration of Mars.