stormed the bunker, exchanged fire and that's when jimmy lee dykes was killed. rescue teams were primed. >> they have plans set out but each case will be very individual. each perpetratorror has unique characteristics, but what they do is they study past cases, they study outcomes. they learn from that, and that's why they try to prepare themselves as best possible. >> reporter: in the meantime, the fbi is still outn the property right now sweeping the 100 acres for more weapons, more possible explosives. shep? > >> shepard: how is the 5-year-old doing, trace? >> reporter: well, the 5-year-old as we know as ethin is now six years old. he's getting a lot of presents and a lot of cards and apparently has a lot to celebrate. the authorities say that physical physically, he's happy, seems like he's fine. it will take a lot longer to kind of get a feel for his mental injuries if there are any at all, you know.