(METRO) This Saturday marks the 20th anniversary of the 9/11 terrorist attacks. The attacks on Sept. 11, 2001 remain the deadliest terror attacks in world history, claiming more than 2,900 lives and causing countless injuries and long-term health problems for tens of thousands of civilians and first responders.

The 20th anniversary of 9/11 will no doubt evoke responses that span the emotional spectrum. Sadness may dominate such responses, but the anniversary of 9/11 also is a great time to reflect on the efforts of first responders. First responders played a vital role on 9/11, and many lost their lives and/or suffered long-term health consequences resulting from their selfless efforts to save innocent victims of the attacks.

In the two decades since the 9/11 attacks, first responders have continued to make countless sacrifices to ensure their communities are safe and peaceful places to call home. The 20th anniversary of 9/11 is a great time to recognize the efforts of first res...