Two days after the Egyptian army coup in Cairo, Islamist Salafist gunmen struck Egyptian security forces in Sinai early Friday. At least one Egyptian soldier was killed and several injured. The assailants fired rocket-propelled grenades at army checkpoints guarding El Arish airport near the Gaza Strip and Israeli border. Another attack targeted a police station in Rafah south of Gaza, close to the local headquarters of Egyptian military intelligence. DEBKAfile: The Egyptian army has imposed a blackout. The incident is believed to have been more extensive than reported with substantial casualties.