ABERDEEN PROVING GROUND, Md., May 9 /PRNewswire/ -- When it comes to military training in Pennsylvania, there's no better place than the Army National Guard's Fort Indiantown Gap. The installation is the key training center for 18,000 Pennsylvania guardsmen each year. Soldiers aren't the only inhabitants at the installation, however; it turns out that there is no better place for the rare, regal fritillary butterfly. In fact, Fort Indiantown Gap supports the largest regal fritillary population east of the Mississippi River....

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