In its first-quarter earnings release, we got a glimpse of how AIG's (AIG 1.00%) revived mortgage-guaranty operations are performing. Since getting back into the ring, the insurer has proved that it can do things differently from what preceded the financial crisis. In the video below, Motley Fool contributing writer Jessica Alling discusses the changes in AIG's guaranty operations, why this may be a good change for the insurer, and how things are going so far.