Similarly, maintain open communications with local law enforcement about any public events being held.  In doing so, it is important to alert them to both the location and the nature of the event:  Is it a simple meet and greet, or is it a town-hall meeting about a highly contentious issue where altercation is more likely? How many attendees and so on? This will help the department make informed decisions about what resources to deploy – how many officers, plain-clothed or uniformed, etc.
Finally, I cannot emphasize enough the importance of being aware of one’s surroundings – both the potential threats and potential security weaknesses.  If an individual speaks or acts in a threatening way, notify local law enforcement and the Capitol Police immediately.  If you are feeling uneasy about something, trust your gut.  Do not hesitate to do so.
Last year, a verbal threat was left on former Congresswoman Ginny Brown-Waite’s voicemail.  My officers, in conjunction with the Capitol Police and the FBI, immediately performed an investigation and the man behind that threat is now serving time behind bars in a federal penitentiary. 
Like you, I believe that Members of Congress and their staffs must continue to be available to the American people.  We must keep our doors wide-open to people of all viewpoints and all walks of life, but we must do so in a way that ensures both their safety and ours.  This assault on our unique form of representational government cannot be allowed to change that form of government.  In closing, if you have any remaining concerns, do not be afraid to speak up and address them.  We owe that to our families, our staffs, and most importantly, to our constituents.