Sunday night, April 10. Siege of the TA Ranch The WSGA group then headed north on Sunday toward Buffalo to continue its show of force. By early morning of the 11th however, news quickly came of a large hostile force heading towards them. They quickly rode and took refuge in the TA Ranch in Crazy Woman Creek. During their flight, one of the Texans by the name of Jim Dudley accidentally shot himself when his horse bucked and his rifle fell to the ground, discharging and hitting his knee. He was later escorted by two others to Fort McKinney to seek treatment, but died in the fort one or two days later from gangrene. The sheriff's posse finally reached the remaining Invaders holed up in a log barn at the TA Ranch, but the latter managed to hold them back, resulting in a siege that would last for three days. The posse surrounded the whole ranch, building pits on the ground for cover and killing the Invaders' horses to prevent them from escaping. The New York Times reported that twenty men tried to escape behind a fusillade, but the posse beat them back and killed three to five. Another Texas gunman named Alex Lowther accidentally shot himself mortally in the groin during the fight. As the siege dragged on, a settler rode off to Fort McKinney requesting to borrow a cannon but was turned down. A blacksmith named Rap Brown tried to build his own cannon, but it exploded when he first tested it. He then built a siege engine he called the "Ark of Safety"—a large, bullet-resistant wagon that would help the settlers get close to the ranch so they could throw dynamite at the Invaders. Fortunately for the Invaders, one of their members, Mike Shonsey, managed to slip from the barn and was able to contact Governor Barber the next day. Frantic efforts to save the WSGA group ensued, and two days into the siege, late on the night of April 12, 1892, Governor Barber telegraphed President Benjamin Harrison a plea for help. The telegram read: Harrison immediately ordered the U.S. Secretary of War Stephen B. Elkins to address the situation under Article IV, Section 4, Clause 2 of the U.S. Constitution, which allows for the use of U.S. forces under the President's orders for "protection from invasion and domestic violence". The Sixth Cavalry from Fort McKinney near