EAST MORICHES - A potentially explosive and dangerous situation was defused in East Moriches. Suffolk County police arrested 34-year-old Ronald Walker and charged him with reckless endangerment after his parents found chemicals that could be used to make illegal fireworks in their garage. Walker is now accused of storing those chemicals at the Woodcrest Drive home where he lived with his parents in East Moriches. Officers began their investigation Tuesday afternoon and wrapped up 12 hours later. The chemicals are so dangerous that arson detectives, a bomb squad and fire marshals responded to the scene, spending the day removing chemicals from the home. Police also discovered weapons in the garage, including a grenade launcher. Walker is being held on $150,000 cash bail.