Thirteen years ago today, a group of fanatic muslim terrorists – 19 in all, armed with box cutters – commandeered four jet airliners in the deadliest attack on U.S. soil. Two airliners were flown into the World Trade Center’s twin towers. One was crashed into the Pentagon. The fourth crashed into a Pennsylvania field when passengers bravely fought back in an attempt to retake their plane and thwart the terrorists. At the end of the day nearly 3,000 people were killed, and the U.S. united in a war on terror to bring down the group al?Qaida in Afghanistan.

Today, after a long and muddled military campaign that detoured into Iraq, a new and deadlier group of Islamic fanatics is threatening in Iraq and Syria. President Barack Obama, who is still trying to end our involvement in Afghanistan, has outlined a strategy to take on the Islamic State in Iraq and Syria, or ISIS. A nation tired of war is looking at another campaign, one involving training and arming anti-ISIS forces in Syria, along with possible air strikes in Syria, and building a coalition of allies in the region to combat this threat.

Why should we do this? Because we remember 9-11. We remember how a small, ill-equipped force of terrorists was able to strike us and hurt us badly here at home. We know that ISIS?has the vicious will and the wherewithal to do the same, if we allow them to.

That cannot be allowed to happen. We don’t need another anniversary like 9-11.