 This summer's political conventions in Milwaukee and Chicago could draw significant protests and security threats. ABC News Chief Justice Correspondent Pierre Thomas. Helicopters and airplanes will patrol the skies. And the Secret Service has a team to counter a new and potentially lethal threat, drones. To get the job done, the Secret Service has its own cadre of drones. The head of the Secret Service in charge of convention security says that right now there are no specific or credible threats.