World leaders, 7,000 athletes, 206 national delegations, 94 boats and 3,000 dancers. Throw in some drones and lasers as France sets its sights on making history with its audacious kickoff for the Summer Games unfolding Friday on the River Seine in the heart of its capital. The water parade will pass beside or under a host of landmarks including the under-repair Notre Dame Cathedral, the Pont Neuf, the Louvre and Place de la Concorde to arrive at the foot of the Eiffel Tower. Here’s a preview.