Joint Base McGuire-Dix-Lakehurst was briefly placed on lockdown Tuesday morning after reports of an active shooter. What we know:Joint Base McGuire-Dix-Lakehurst issued a lockdown order just before 11 a.m. Tuesday. In a press release shared after the lockdown was lifted, base officials said emergency crews responded to reports of an active shooter just before 11 a.m.No active shooter threat was ultimately found and the base returned to normal operations just before noon. What we don't know:Joint Base McGuire-Dix-Lakehurst Commander Col. Michael Stefanovic said their priority is "the safety and security of everyone on the installation." Local perspective:Joint Base McGuire-Dix-Lakehurst is New Jersey's largest military facility located 20 miles from Trenton and about 40 minutes from Philadelphia.