In the hospital, it was realized that rather than a stone as initially thought, it was a live grenade!
Due to fear of it going off, 3 volunteer doctors and one nurse surgically removed the live grenade in an open field under direction of two explosive experts from the military.
Due to airway compromise, a trach was first performed prior to extraction.
Bear in mind, that the doctor who removed the grenade did not wear any armor.
Read more on Fox News here.