What role does the Transportation Security Administration (TSA) have as a sector-specific agency (SSA) for critical infrastructure protection?

What role does the Transportation Security Administration (TSA) have as a sector-specific agency (SSA) for critical infrastructure protection? What other departments and agencies protect the transportation systems sector? Why is collaboration among these departments and agencies important to protect infrastructure assets? (Minimum words 125) As threats to cybersecurity systems increase, homeland security personnel must adapt and improve the tools and techniques protecting critical infrastructure assets. Given this reality, what are three security practices that owners and operators of critical infrastructure should follow to improve border and transportation security cyber systems? (Minimum words 125) What is an insider threat, and how does it relate to transportation and border security risk? What are some potential strategies that public and private agencies can implement to protect against insider threats? (Minimum words 125) http://www.cnet.com/news/the-biggest-cyber-threat-to-companies-could-come-from-the-inside/ Please read the article and give recommendation to protect information from insider attacks. (Minimum words 100) http://www.cbp.gov/border-security/along-us-borders/strategic-plan Please read the article and give your thoughts. (Minimum words 100)