`` before we were interrupted '' - he gave me a heavy glance that made clear whom he was holding responsible for the disturbance - `` i was explaining to your crew that i 'm going to be testing you on the c-41 protocol , and that if you do n't yet understand the four subsets of the c-41 protocol , you 'll find your ass in ethan 's office explaining to him why you spent the evening partying with the baby vamps when you should have been preparing to ensure the security of your house . ''