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Congress gave Tampa and Charlotte police $50 million each to keep America's egg-throwing anarchists at bay during the Republican and Democratic conventions. Turns out, both cities got quite a lot of bang for their buck.

Local authorities have assembled a powerful mix of armored trucks, aerial drones, EOD X-ray machines, bobcat vehicles and other big ticket machinery to maintain the peace during what the Department of Homeland Security has declared "national special security events." Here's what authorities in Tampa and Charlotte will be using for the Republican and Democratic conventions:

Ground Drones Ever seen one of these? What you have here is the Wraith by United Drones. It's an unmanned ground vehicle that will be roaming the streets of Tampa next week serving as the police department's eyes and ears. They can cruise up to 65 mph and climb almost anything, as The Tampa Tribune's Howard Altman explains:

The Wraiths ... have the capability of carrying surveillance cameras and even lethal and non-lethal weapons. "They are fully autonomous backup units," [engineer Curt] Winter said of the Wraiths. "They are designed to follow certain agencies out into the field and, if they get into trouble, be activated by a command center and provide instant backup."

Bobcat Vehicles The Tampa police also spent $790,000 for a range of new vehicles. According to ABC News' Julie Percha, that includes several bobcat utility vehicles. To the right, an armored bobcat arrives on the scene of a grand theft investigation