question:  Why wasn't Read wearing his green beret when arrested Umluana?
context: Illustrated by Schoenherr Read locked the door and drew his pistol. Sergeant Rashid handed Premier Umluana the warrant. If Umluana noticed Read's gun, he didn't show it. Umluana turned back to Rashid a second too soon. Two men with rifles plunged into the gas; sighing, they fell to the floor in a catatonic trance. Two types of recruits are accepted by the UN Inspector Corps: those with a fanatic loyalty to the ideals of peace and world order, and those who are loyal to nothing but themselves. Trained to use small arms and gas weapons, they guarded certain borders, bodyguarded diplomats and UN officials, even put down riots that threatened international peace. Read went through six months training on Madagascar. Rather than resign, he accepted punishment which assigned him to weeks of dull, filthy extra labor. One power implied in the UN Charter no Secretary General or Inspector General had ever tried to use. The power to arrest any head of state whose country violated international law. Men planted bases on the moon and in four years, 1978-82, ringed the world with matter transmitters; but the black population of Africa still struggled toward political equality. Umluana took control of Belderkan in 1979. He began a propaganda war against neighboring South Africa, promising the liberation of that strife-torn land. Most Negro leaders, having just won representation in the South African Parliament, told him to liberate his own country. China called the uproar a vicious slur on a new African nation. The United States and Russia, trying not to get entangled, asked for more investigation by the UN. Umluana was defying world law. They would enter Belderkan, arrest Umluana and try him by due process before the World Court. By transmitter, if all went well, they could have Umluana in Geneva in an hour. From Miaka they would transmit to the Belderkan Preserve, a famous tourist attraction whose station could transmit to any point on the globe. "There's no military base near Miaka," Rashid said.
output:  Read was in plain clothes. They were undercover.
options:  His beret was knocked off his head in the scuffle.  Read doesn't really like wearing hats.  Read was in plain clothes. They were undercover.  Read forgot that he placed it in his pocket earlier.