Hike in the park

I went out to the park this afternoon and hiked trails with my son and his girlfriend.  I took my new Nikon camera with expensive telephoto lens.  I was standing on a bridge and taking a photo of my son swinging on a vine.  I backed up to get a better shot and fell off the bridge.  Luckily, that section of the bridge was not over water and I survived the fall.  However, the zoom telephoto lens no longer zooms. 
Later this afternoon, I slipped away and went to the track and ran laps.  10K trail race tomorrow night..