Added a new (old) sermon recording

Carey and I were out of town unexpectedly for Sunday, February 20, so I recorded a video of myself preaching my sermon titled "Commandos, Spies, and Secret Missions" and used that video for the sermon during the worship service on that Sunday. The manuscript for that sermon has been posted since I first preached it in August of 2008, but I've now added a link in that post so you can download the recording.