The Chicago-based aircraft manufacturer is the first major U.S. company to do business in Iran since sanctions were lifted earlier this year as part of the international nuclear accord.
In testimony before the Senate Armed Services Committee, National Intelligence Director James Clapper says "unpredictable instability has become the new normal."
Iran is eager to have punitive financial measures removed and has been working to scale back its nuclear program much faster than many predicted, according to those monitoring the process.
The country has been dismantling parts of its nuclear program more quickly than many expected. When international inspectors confirm Iran has met its obligations, many sanctions will be lifted.
Senate Democrats succeeded this week in fending off a resolution to disapprove of the deal. All eyes now turn to the international arena, where the deal will begin to be put into effect.
Following parliamentary approval, Iran's top council of senior clerics on Wednesday authorized the deal struck by the country and world powers. The deal's next step is "Adoption Day."
Sunday is the so-called "adoption day" for the nuclear deal with Iran. It's the day that Iran will begin sharply curtailing its nuclear program as part of the agreement reached this summer.