A Johnson City Man Accused Of Using Marijuana In Front Of His 18-Month-Old Child Is Behind Bars. 30 Year Old Jonathan Hackney Is Charged With Felony Child Abuse/Neglect. Relatives Of The Toddler Contacted Authorities And Said The Child Had Been Exposed To Marijuana. An Investigation Revealed The Youngster Tested Positive For THC. Hackney Is Expected To Appear In Court Soon.