- Former President Donald Trump survived an assassination attempt at a Pennsylvania rally.
- A former Secret Service agent says counter-snipers would usually have "360-degree coverage" for similar events.
- Investigators will likely look into the event's "site plan."
A former Secret Service agent said counter-snipers at the Pennsylvania rally where a would-be assassin wounded former President Donald Trump should have had "360-degree coverage" of the event and surrounding buildings.