Gov. Bill Haslam has signed legislation that allows Tennesseans to get a lifetime handgun-carry permit. During the recent legislative session, the House and the Senate both passed the measure and Haslam signed it this week. Before the new law, a permit was valid for four years. Now, Tennessee residents at least 21 years of age can pay $500 for a lifetime permit. A criminal record check will be done every five years. The state Safety Department can suspend or revoke a permit if the department finds a person no longer satisfies requirements.