January 4 2003 Two US pilots charged with manslaughter over a deadly "friendly fire" bombing that claimed the lives of four allied soldiers in Afghanistan were pressured to take amphetamines that may have impaired their judgement, their lawyers claim.They said the air force made pilots use the Dexedrine "go pills" because of their erratic schedule - flying day and night - but did not tell them of the manufacturer's warning against operating heavy machinery or engaging in hazardous activities.The F-16 pilots, Major Harry Schmidt and Major William Umbach, face court-martial for dropping a laser-guided bomb near Kandahar on April 17...