We ask questions that might seem extraordinary if our families at home knew we were pondering them. Should we put CNN on top of the car? Does that make us less of a target — or more of one?

Also on Friday, two Israeli Apache attack helicopters crashed in northern Israel after colliding in midair, the Israel Defense Forces said. The pilot was killed and three others on board the copters were injured.

In a Thursday interview with Arabic-language news network Al-Jazeera, Nasrallah accepted responsibility for the Wednesday attack, while conceding that an apology to the family was not sufficient.