Ground Prep 12/26/2017 ***********@***oo.com" data-headline="<p>BoeingLeonardo MH-139 glass cockpit during media flight over Philadelphia.</p>" data-description="Boeing/Leonardo MH-139 preparing for flight at the Leonardo manufacturing facility in Philadelphia, USA." /> Boeing/Leonardo MH-139 preparing for flight at the Leonardo manufacturing facility in Philadelphia, USA.
***********@