The link to the whole article is listed below, I've put an excerpt in here:
AIRPORT PARTNERSHIP OPENS QUARANTINE-FREE ENTRY TO ITALY STARTING DEC. 19, 2020
Under the agreement between the Atlanta-based carrier and the two airports, flyers holding a U.S. passport may be able to enter Italy without a quarantine period. To be eligible, flyers must take a PCR COVID-19 test up to 72 hours before departure, along with a second rapid test at ATL. Upon landing in Rome, flyers will be subjected to a third rapid test. To successfully enter, all three tests must be negative.
When returning to the United States, flyers must take one final rapid test at FCO before boarding their aircraft. All flyers returning from international travel will also be asked to join the airline’s voluntary contact tracing program, which will help the Centers for Disease Control (CDC) in managing the spread of the novel Coronavirus.
Testing won’t just be limited to international travelers bound for Rome. In the internal memo, Bastian also told employees they would expand their internal capacity to offer weekly tests for all employees. Onsite rapid testing will be available to employees at major airports, while smaller airports and employees working from home will get access to testing kits.
“These efforts continue to be critical to your health and safety, as well as to the future of our business, given that many of our customers still have concerns about air travel,” Bastian wrote in the memo. “While we enjoyed an increase in travel volumes over the Thanksgiving holiday, in reality they were still less than half of what we normally fly during the holiday.”