toxicologist didn t approve this equient. until september. peter nickels, the attorney general for the district says the dwi cases fo the last six months will be reviewed. some charges may be dropped. some may be reduced. he promised to be fair and accurate. d.c. police say their machines are accurate. it s the procedure that was the problem. there is absolutely no issues with the integrity, the reliability, the accuracy of the instruments. reporter: so the problem here is? it s protocols and procedures. reporter: now if the story sounds familiar, let s tke a look at some history. from march 2008 to march 2010, police had calibration problems with the intoxilizer. at s the equipment they used back thenin dwi arrests. as a result of that problem, 300 dwi convictions are now under review. the dispute over dwi cases in d.c. is likely to go on and on for some time. barbara, back to you. all right, thank you, pat. now let s get a check of our weather. some places were