If the number of concealed-handgun license holders is any indication, robbers may have to worry about getting more than stolen goods during a heist. With an increasing number of state residents legally packing heat, more robbers may be taking away some hot lead. More than 54,000 Oklahomans are licensed to carry concealed handguns under the Oklahoma Self-Defense Act, said Jessica Brown, spokeswoman for the Oklahoma State Bureau of Investigation. That number is up from around 31,000 in 2000 and 15,081 in 1996, after the first year of licensing. Once approved, applicants are licensed to carry concealed weapons for five years....