Iowa Senator Tom Harkin chalks up Yugoslav claims that NATO jets attackedand killed some 85 Kosovar civilians with “accidents happen.” Harkin, whowas a Navy jet pilot during the 1960s, says it’s still unclear what DIDhappened.NATO officials admitted earlier this week a passenger train was accidentallyhit by jet-fired missiles, killing a number of civilians. Harkin says ifNATO jets did kill the civilians in this latest incident, it was notintentional.Harkin says he would not support the immediate placement of U-S groundtroops in the war-torn region, saying the air strikes need to be given moretime to work.The air attacks by the 19-nation alliance began some 23 days ago.