Tokyo may resume testing of X-2 Posted on April 24, 2018 by alert5 An anonymous Japanese official told Flight Global that Tokyo may resume the X-2 flight test program in future. The stealth demonstrator had completed 34 flights before being grounded. Related posts (Automatically Generated): Japan to approve export of SM-3 Block IIA KC-135 Block 45 testing completed Red Arrows cleared to fly again FMS of three RQ-4 Block 30 (I) for Japan approved Japan relax weapons export rules Testing of Bulava to resume in third-quarter