Sentry Class Graviton Shields are commonly found for sale in Liberty space. In fact, all players are issued a Sentry L.F. Shield with their Starflier at the beginning of the game. * Sentry Fr. Shield * Ship Type: Freighter * Capacity: 765 * Regeneration Rate: 17 * Price: $1,270 * Sentry H.F. Shield * Ship Type: Heavy Fighter * Capacity: 654 * Regeneration Rate: 14 * Price: $1,080 * Sentry L.F. Shield * Ship Type: Light Fighter * Capacity: 600 * Regeneration Rate: 13 * Price: $1,000