LOS ANGELES — When Alan Castellanos began moving toward a team of Los Angeles police officers with a knife in his hand one afternoon in April, they seemed ready to hold him off without using deadly force.
Two officers had Tasers trained on Castellanos, another had a beanbag shotgun aimed at him and a fourth was armed with a 40-millimeter hard-foam projectile launcher.
Yet within seconds, Castellanos was on the ground with a fatal gunshot wound to the abdomen after a fifth officer shot him with his handgun just as another deployed a Taser.
