The Bureau of Justice Assistance, U.S. Department of Justice, published a document on Engaging the Private Sector To Promote Homeland Security: Law Enforcement -Private Security Partnerships. Everyone agrees that a private - public partnership is an excellent idea. List and describe the obstacles to Law Enforcement - Private Security Partnerships, then the 4 most important guidelines for collaboration out of 9, and finally, provide an example of when such partnerships were successful. Answer the question in 300 words or less, using APA citation.