Complex sentence: After qualifying to operate carrier-based aircraft, Bolt was assigned to Miramar Naval Air Station in San Diego, California, until June 1943, when Bolt and his class departed for the Pacific Theater aboard the USS "Rochambeau" (AP-63).
Split into simpler sentences: After qualifying to operate carrier-based aircraft, Bolt was assigned to Miramar Naval Air Station in San Diego, California, until June 1943. At this point, Bolt and his class departed for the Pacific Theater aboard the USS "Rochambeau" (AP-63).