Nov. 27: Later that same day, Union breaks her silence on the subject via Twitter, writing, "So many tears, so much gratitude. THANK YOU! Just when you feel lost, adrift, alone.

Nov. 27: Later that same day, Union breaks her silence on the subject via Twitter, writing, "So many tears, so much gratitude. THANK YOU! Just when you feel lost, adrift, alone... you got me up off the ground. Humbled and thankful, forever ❤."

Dec. 1:AGT producers and NBC issue a new statement in response to Union's departure. "We remain committed to ensuring a respectful workplace for all employees and take very seriously any questions about workplace culture," NBC said in a joint statement with AGT production companies Fremantle and Syco, which was founded by Simon Cowell, a judge and executive producer on the competition show. "We are working with Ms. Union through her representatives to hear more about her concerns, following which we will take whatever next steps may be appropriate."

Dec. 2: Leno breaks his silence. According to the Variety report, the late-night host's offensive joke involved a painting of Cowell and his dogs. "Leno joked that the pets looked like something one would find 'on the menu at a Korean restaurant,'" the report stated. When asked about the offensive joke in video posted by TMZ, Leno remained silent. But he did respond when asked about Union's firing, telling the camera, "I love Gabrielle Union. She's a great girl. I really enjoyed working with her. She's really good."

When asked if Union was "treated fairly," Leno replied, "I don't know...but I think she's a great girl."