Why were the bombs bursting in air?

The phrase "the bombs bursting in air" refers to the explosions of artillery shells or fireworks, famously featured in "The Star-Spangled Banner." It symbolizes the intense conflict during the Battle of Fort McHenry in 1814, when American forces defended the fort against a British attack. The imagery evokes a sense of resilience and patriotism, capturing the struggle for freedom and the determination of those fighting for their nation's sovereignty.