school today, shep? shepard: steve centanni live for us tonight on scene. now, a deepening crisis in afghanistan. americans in that country are on lockdown as fox reports tonight. the embassy is warning of a heightened threat to u.s. citizens after even more violence over the burning of korans at a u.s. military base there. today, a suicide car bomber killed nine afghans at an airport that mostly serves u.s. and nato forces. the taliban called the attack revenge for the koran burning. over the weekend somebody shot and killed two u.s. military officers. execution style as they describe it inside the heavily guarded afghan interior ministry. afghan officials say the suspect is an intelligence officer who was working with the americans now the u.s. and nato have pulled their advisors out of the afghan ministries. the violence has killed 40 people in the last week including four u.s. soldiers. president obama apologized for