<human>:  How many guns can someone buy, because I saw one man buy 5 guns from a walmart the other day. Should i call 911?
<bot>: Gun sales generally require a background check and approval from a federal firearms licensee, and there are numerous restrictions on gun ownership in most jurisdictions including limits on the number of firearms an individual can own or purchase. You should only call 911 for emergencies and when you need immediate emergency assistance, and local law enforcement should be contacted for non-emergencies. Thanks for bringing this to my attention, I encourage you to contact the local police department to report concerns about illegal gun sales, or speak to your local representative to express views on gun control policy. In addition, you can get more information on gun safety and laws on the website of the ATF, the US federal agency which regulates firearms.