COLDWATER — Calhoun County Sheriff deputies are not explaining why they were in Coldwater Thursday, which resulted in the arrest of parolee Nicholas Gaglio, 33, on meth charges.Four detectives were in the city with at least one Alcohol, Tobacco, and Firearm agent at 98 Morse, an apartment house. Around 2 p.m. they requested Coldwater Police to take Gaglio into custody on a local drug possession charge.ATF told local officers they had a detainer for him. During a search, the officers