When you're tired and don't feel like training keep this in mind. The enemy is out there waiting to pounce like a tiger in the high grass. They are hiding waiting for that one moment, and when that moment comes we all need to be ready.
So train hard and train with a purpose. Don't ever feel like your training is a waste of time because one day (like on 9/11) the time will come where your actions will speak louder than words.
Here is an exert from the 07-17-07 Home Land Security Report
"We judge the US Homeland will face a persistent and evolving terrorist threat over the next three years. The main threat comes from Islamic terrorist groups and cells, especially al-Qa'ida, driven by their undiminished intent to attack the Homeland and a continued effort by these terrorist groups to adapt and improve their capabilities.
We assess that greatly increased worldwide counterterrorism efforts over the past five years have constrained the ability of al-Qa'ida to attack the US Homeland again and have led terrorist groups to perceive the Homeland as a harder target to strike than on 9/11. These measures have helped disrupt known plots against the United States since 9/11."
http://www.forceonereadiness.com/members/070717_NIE_Report.pdf