No, your eyes are not playing tricks on you. It is an F-15C with conformal fuel tanks.
By 1984, the USSR had amassed a considerable submarine launched ballistic missile capability which complemented their already powerful ICBM force. The vast majority of the Soviet SSNB submarines, known as ‘boomers’, were based at Archangel and Murmansk. Their pre-launch stations were usually in the White Sea sector. Because of this, the US Navy devoted a large portion of its SSN submarines or ‘hunter killers’ to located and then follow the movement of all Soviet SSNB boomers in the White Sea. To perform this task, US SSNs ran through the Giuk Gap in route to their patrol areas. To counteract the Americans, the Soviet navy began a pattern of deploying an ever increasing numbers of modified Bears, call sing ‘F’, in an effort to track the US SSNs boats before they enter the Sea.