Danny, 10, can recite the Five Pillars of Islam: faith, prayer, charity, fasting and pilgrimage.
Jeremy, 12, understands the difference between Predator armed drones and Global Hawk surveillance drones; between 500-pound "dumb" gravity bombs and 2,000-pound "smart" precision-guided bombs.
Gabe, 14, knows that Pastun and Dari are the spoken languages of Afghanistan while Pastuns, Uzbeks and Tajiks make up the main ethnic groups.
Zack, 18, can locate most of the "stans" -- Afghanistan, Pakistan, Tajikistan, Kyrgyzstan, Kazakhstan, Uzbekistan and Turkmenistan.
Since Sept. 11, on a practical and comprehensible level, my sons have learned about the religion of Islam, the military capability of the United States, the ethnicity of Afghanistan and the geography of Central Asia.