Progression of the blowout jet of 2008 September 20 observed in coronal X-ray images from Hinode/XRT. The jet's base arch is just inside the limb in the northern polar coronal hole, is viewed mostly from the side, and during the jet (third and later frames) is seen to span about 20,000 km. Each upward slanted arrow points to brightening in the interior of the base arch. Each downward slanted arrow points to the lower leg of a strand of the jet's spire that seems to be rooted in front of the jet's miniature-flare-arcade bright point. In the upper right corner of each frame is the universal time.