Thunder rumbled and rain pattered on the leaves as Connor Stevens tramped through the darkness down a wooded path to the base of the Brecksville-Northfield High Level Bridge. A sad-eyed 20-year-old poet from the Cleveland suburbs, Stevens was crouched in the foliage, his baby face obscured by a bushy lumberjack’s beard. Beside him ducked two friends from Occupy Cleveland – the group that had come to define Stevens and his place in the world – both as gaunt and grungy as Stevens himself. Farther up the trail, Stevens knew, three other comrades were acting as lookouts. Gingerly, the young men opened the two black toolboxes they’d carried down from their van. Inside were eight pounds of C4 explosives.