A cargo ship near the Key Bridge in Baltimore Harbor exploded, sending a mayday signal and prompting a response from the U.S. Coast Guard. Fortunately, no injuries have been reported following the incident, which has been described as a significant explosion that caused a visible fireball. Authorities are currently investigating the cause of the explosion, which rocked the ship and created a chaotic scene reminiscent of past incidents in the area, including the Key Bridge collapse. Videos from the scene show the extensive damage and the aftermath of the blast, but the situation has fortunately not resulted in any casualties.