Emergency crews are working nonstop to prevent an overheating tank filled with a toxic chemical from leaking or triggering what could be a catastrophic explosion as approximately 50,000 residents in Orange County, California remain under evacuation.

There is understandable concern about an explosion as one of the possible outcomes. OCFA Division Chief Nick Freeman and Dr. CK, the Orange County Health Officer, provide an operational and health care perspective on the evacuation zones that account for…

Methyl Methacrylate | C5H8O2 | CID 6658 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.

🚨 BREAKING: SHOTS FIRED just outside the White House

Multiple reporters are saying they've heard 30 SHOTS

Press has been rushed into the press briefing room by Secret Service

White House now on lockdown.

Countersnipers on rooftop

Pray for President Trump…

🚨: DC law enforcement tells me Secret Service shot two men outside the White House, at 17th Street and Pennsylvania Ave.

1 unconscious/not breathing.

The other conscious/breathing.

No injuries to LE.

Hearing more info on the circumstances but working…

🚨 UPDATE ON SHOOTING OUTSIDE OF WHITE HOUSE:

-Around 6pm, Gunman approached White House gate on West Side
-Gunman brandished pistol, fired 3x toward White House
-Secret Service returned fire
-Gunman taken down
-Bystander on street also hit by gunfire
-Gunman…