Several law firms sponsor externship programs at Legal Aid in which an entering or mid level associate works on a full-time pro bono basis at a Legal Aid site, generally for four months, and then is replaced by another associate who rotates to Legal Aid. Externships have proven to be a particularly valuable and efficient pro bono program. At present, the law firms of Fried, Frank, Harris, Shriver & Jacobson LLP, Skadden, Arps, Slate, Meagher & Flom LLP, and Milbank, Tweed, Hadley & McCloy LLP sponsor externs.