Briefly answer these four question in a seven-line paragraph with reference to each question.
Q 1: Homegrown Radicals Deadlier Than Jihadis in the US
In the 14 years since Al Qaeda carried out attacks on New York and the Pentagon, extremists have regularly executed smaller lethal assaults in the United States, explaining their motives in online manifestoes or social media rants. How does this affect the transportation system?
Q 2: General Aviation Security
Discuss some provisions or regulations on General Aviation security worldwide.
Q 3: Mass Transit Security
Discuss some trends in mass transit security.
Q 4: Hazardous Material Transport
What are some challenges that can develop from transporting hazardous materials? How can they be averted?