You will have permission to fly from the owner/agent of the property or asset for Client missions.
Should you be stopped by a security officer, we'd ask that you state what you are doing (ex. Making a marketing video for the owner). If security/police are insistent on you stopping, certainly oblige and contact us immediately: email@example.com or call the specific DroneBase employee overseeing the mission.
Do not escalate the situation. At times, many local jurisdiction are unaware of federal drone regulations even though you are a qualified pilot.