CEDAR RAPIDS — The last time Jerry Micka flew a mission in a B-29 Superfortress, World War II had just ended and he was dropping relief supplies to American prisoners of war in China.“I guess that was my favorite trip, because you like to help your buddies,” said Micka, a longtime Cedar Rapids resident.The 91-year-old veteran relived his wartime memories Sunday morning when he flew in a B-29 named “FIFI” at The Eastern Iowa Airport.