The tower crane that hovers over the future Mutual of Omaha headquarters building is about to get taller. Four additional mast sections are now positioned at the crane’s base. When inserted into the tower crane, the mast/tower will grow another 80 feet taller. Located at 14th & Farnam Street downtown, the Mutual of Omaha headquarters building is rising steadily. Crews are currently working on the 38th floor of the concrete core. When it’s completed in late 2026, the $600 million Mutual Tower will be 44 stories and 800,000 sq. ft. At 677 feet high, it will be the tallest building in Nebraska, Iowa, Missouri and Kansas…