ERIC M JOHNSON LAWYERS for families of a fatal Boeing Co 737 MAX crash in Ethiopia are seeking testimony from the planemaker's chief executive Dave Calhoun and his predecessor Dennis Muilenburg, among other current and former employees, according to a court filing. The Boeing 737 MAX crash on Ethiopian Airlines on March 10, 2019, occurred five months after a similar disaster on a Lion Air flight, together killing 346 people and sparking a hailstorm of investigations and lawsuits. While Boeing has mostly settled civil litigation stemming from the Lion Air crash, it is still facing over a 100 lawsuits in…