This from the AJC's Daniel Malloy in Washington:

Several hundred revelers waving signs and flags let out a yell in front of the Court as word spread of the decision, via smartphones, word of mouth and contagious cheering.

A brief rendition of the national anthem was followed by "USA" chants.

FILE - In this April 28, 2015, file photo, demonstrators stand in front of a rainbow flag of the Supreme Court in Washington, as the court was set to hear historic arguments in cases that could make same-sex marriage the law of the land. Gay and lesbian couples could face legal chaos if the Supreme Court rules against same-sex marriage in the next few weeks. Same-sex weddings could come to a halt in many states, depending on a confusing mix of lower-court decisions and the sometimes-contradictory views of state and local officials. Among the 36 states in which same-sex couples can now marry are 20 in which federal judges invoked the Constitution to strike down marriage bans. (AP Photo/Jose Luis Magana, File)

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The first thing Paula Foster, of Nashville, did was call her wife: "Tennessee has to say we are married now," Foster said.

The pair had adopted two children since getting married in Canada in 2006.

"It's amazing to get to be here and see everything happen in the moment," she told the Atlanta Journal-Constitution as a tear rolled down her cheek.

"I was confident," she added. "Everything that has happened in the last few years has been leading to this moment."