/**
  * Remove the specified resource from storage.
  * @access  public
  * @param  $id        int
  * @return Redirect
  */
 public function destroy($id)
 {
     try {
         $sighting = Sighting::find($id);
         $trip_id = $sighting->trip_id;
         $sighting->delete();
         $flashMessage = 'Removed sighting.';
     } catch (Exception $e) {
         $flashMessage = $e->getMessage();
     }
     return Redirect::to('/admin/trips/' . $trip_id . '/sightings')->with('flashMessage', $flashMessage);
 }