Around 13:00 on July 16, the 19th Infantry Regimental commander contacted Dean, who ordered him to break the roadblock.
Five hundred men from the regiment were gathered waiting to break the roadblock while heavy armor units from Taejon moved against it from the other side.
That evening, 2nd Battalion was moved to attempt to deal with the North Koreans in the rear but suffered casualties as well, and was unable to break the roadblocks.
On 15 February the mayor sent in dozens of police to break up the roadblock.
On the second day of the fighting at the pass, the relief force broke through the roadblock with the help of air strikes and artillery and tank fire.
As my colleagues Neil MacFarquhar and David D. Kirkpatrick report, members of the Lebanese military took positions in Beirut on Monday aimed at removing gunmen from the street and breaking down roadblocks set up by civilians following a car bomb on Friday that killed a top security official and seven others.
The deeply embedded idea of a happy homemaker was destroyed, and spilled into the workforce - removing barriers and breaking down roadblocks.
The police used tear gas and rubber bullets to break up roadblocks in the north and south of the country, but in contrast to Monday, when two people were killed, no deaths were reported.
There was, he said, "a policy of capturing and dealing with terrorists", but he added that if people who were suspected of being armed broke through a roadblock, "they must accept the security forces have to take the necessary action".
If one of these alternatives shows sufficient promise to attract a significant group of leading researchers away from the old paradigm (typically by furnishing new potential exemplars that break through the old roadblock to progress), a paradigm shift or paradigm change occurs and that is a Kuhnian revolution.
