Insulating standoffs keep two parts from touching each other, thereby preventing electrical shorts. In years past, a hijacking meant a diversion, with hostage negotiations and standoffs. Twin lead therefore requires careful installation around rain gutters, and standoffs from metal support masts. In the 1890s, armed standoffs were avoided narrowly several times. Standoffs have occasionally occurred at the Bangladesh-Myanmar border, including in 1991 and 2008. Most of the standoffs took place when Myanmar attempted to force Rohingyas into Bangladesh. At very long standoffs, velocity is lost to air drag, further degrading penetration. There were also reports of standoffs between army units, especially the 27th. After a series of defensive standoffs in the fourth quarter, the game went into overtime.