President Donald Trump‘s Middle East special envoy Steve Witkoff and son-in-law Jared Kushner boarded the USS Abraham Lincoln on Saturday, just one day after high-stakes negotiations with Iran over its nuclear program.

Witkoff, Kushner, and U.S. Central Command Cmdr. Bradley Cooper met with Iranian Foreign Minister Abbas Araghchi and his team in Oman on Friday for the nuclear talks, discussions that were inconclusive but were framed by principal figures as a positive step to reaching a deal. With more rounds expected, the three U.S. negotiators visited a U.S. aircraft carrier over the weekend that has been operating off Iran’s coast for weeks as tensions remain high between the two nations.