Federal agents hunt for guns, one house at a time, page 1

It is likely that the agents were looking to see if someone was using the woman's name to buy guns and ship them to Mexico. That situation is problematical for many and slowing down the illegal trade will help gun owners in the long run and remove some of the arguments for stricter controls.
As to ownership of guns and concealed carry -- this is a good way to make the bad guys rethink whom they target as long as the intended victim knows the limitations of their permit and the laws.
Here are some useful rules to help out:
1. Don't be an aggressive hero. Stopping a robbery at the local convenience store is not your job.
2. Retreat until you are cornered then shoot without warning. This does several things for you. It shows that you are not the aggressor and that you were willing to avoid confrontation. It shows that you only acted when you had no way to escape. Warning the bad guy after he has chased you down helps him by alerting him to what happens next. He doesn't need any additional help.
3. Wounded bad guys tell lies. If they can't talk, they can't lie or seek revenge. Stay as anonymous as you can. Another reason to avoid confrontation.
4. The vast majority of concealed carry folk never display their weapon much less get involved in a shootout. I recommend that you not carry an arsenal and use the minimum size weapon that you think is necessary. You will likely not need 4 extra mags for your doublestack 1911 and all that extra will make the prosecutor think that you were looking for trouble. A small revolver or compact auto should do the trick.
5. If you are unlucky enough to get into it, find cover. People under stress often lose their skills and blast away. Even a non-trained criminal can shoot you at close range. Gunfire from anything helps people remember that they suddenly need to be somewhere else. Nobody has to get hurt unless you are cornered. See #2.
6. Don't corner any rats. The bad guys will be wanting to leave without being perforated. They were tough guys when they thought that they were the only ones with guns. Don't make them desperate by cornering them and allow them to retreat if you can.
6. After the event, the police will be talking to you. They will probably cuff you -- go easy and don't panic. They will take your gun. Don't wave it at them when they arrive. Open it and place it where they can see it. Don't do anything sudden and obey their commands. When they arrive they don't know who did what and who is dangerous to them. They are as afraid as anyone when it comes to getting shot and are trained to be cautious. Go with the flow and be sure to get a receipt for your weapon.
7. Keep your mouth shut. No one has to know you are an IPCC champ or that you shot expert with everything you touched in the service. If you are serious, take the BS stickers off your car and truck about "prying your cold, dead hands...." or your ooorah USMC/Airborne hero sticker. If you have a SEAL tattoo, you are on your own but, then again, you are used to that.