Base Realignment and Closure was a process by a United States federal government commission to increase the efficiency of the United States Department of Defense by coordinating the realignment and closure of military installations following the end of the Cold War.

A political realignment is a set of sharp changes in party related ideology, issues, leaders, regional bases, demographic bases, and/or the structure of powers within a government.

a movement among some Anglicans to align themselves under new or alternative oversight within or outside the Anglican Communion.