We reached Atlanta at around 10.30 on the 3rd of feb but found out that we had missed our connecting flight to Saint Louis because of the delay in departure from Mumbai. No problem. We just decided to take the next flight leaving at 1.30 and spent time exploring the airport.
The airpot at Atlanta is huge!! Bigger than any that I have seen atleast. And it was filled with people but it did not feel crowded. 10.30 to 1.30 might seem a long time but we never realised how time went.