Energetic electron enhancement during the major geomagnetic storm on 15-16 May 2005. Global distribution of the electron fluxes in energy range: (a) >30 keV; (b) >100 keV; (c) >300 keV measured by the NOAA/POES-15, -16, -17 satellites at altitude of ~850 km. The maps are composed of data retrieved from two orthogonally directed detectors (see details in the text). The white curve indicates the geomagnetic equator. Intensity of energetic electron fluxes extremely and globally enhances at equator-to-low latitudes (IRB and below it) even exceeding one at high latitudes (ORB and auroral zone).