In a daring feat of circumnavigation never before attempted, 6-year-old Connor Damrush successfully completed a circuit of the 2500 block of Parker Drive early Saturday morning, silencing naysayers who had called it impossible. 'We maintained walkie-talkie contact with him for most of the journey, but Connor went into radio silence shortly after turning onto Orchard Street,' said Mission Control specialist Dougie O'Neill, 5. 'It was tense for a few minutes there, but boy, did we all breathe a sigh of relief when we saw that red trike come around that corner.' Among the sights Connor reported from the far side of the block were his school's flagpole, a Dunkin' Donuts sign, and a garbage truck. 