Given what we learned yesterday about Mr. Padilla’s alleged plans to ignite hotels and apartment highrises using the natural gas lines, this story on two missing propane tanker trucks is alarming. Authorities are downplaying the terrorist possibility, but if you have other ideas on why someone would steal two tankers loaded with propane, I’m listening. Recall that another tanker went missing in Colorado shortly after 9/11, and a gasoline tanker disappeared in April in Pennsauken, New Jersey. (I admit, I don’t know if either truck was ever found.)