Original sentence: " Moreover, on the B-2 Stealth Bomber, some of the materials can be restored only slowly, and laboriously as with the cauking.For example, "On the B-2 (stealth bomber)... the bomber used dozens of different materials, each with its own supply chain, and required its own maintenance, and handling training.In addition,any contamination on uncoated surfaces can affect the cohesion of the coat, and it then must be paritally or fully reapplied.LO materials have to be removed and replace LO materials at the slightest sign of damage.Similar to the B-2 spirit, the coating is key to the craft's stealth capability, however, the coating is vulnerable to rain and other abrasions.The F-117, was the first operational stealth aircraft.The FA-22 stealth Raptor experiences similar problems with its specialized RAM coating.This creates large expenditures when compared to other types of craft, because of the availability of interchangable parts, for conventionally produced aircraft
Edited sentence: "  Moreover, on the B-2, some of the materials can be restored only slowly, and laboriously as with the cauking.For example, "On the B-2 (stealth bomber)...used dozens of different materials, each with its own supply chain, and required its own maintenance, and handling training.In addition, any contamination on uncoated surfaces can affect the cohesion of the coat, and it then must be paritally or fully reapplied.LO materials have to be removed and replaced at the slightest sign of damage.Similar to the B-2 stealth bomber, the coating is key to the craft's stealth capability, and, as with the B-2, the coating is vulnerable to rain and other abrasions.The F-117 Nighthawk, was the first operational stealth aircraft.The FA-22 stealth fighter, the Raptor, experiences similar problems with its specialized RAM coating.This creates large expenditures when compared to conventionally built aircraft.This is because conventional aircraft have of the availability of interchangable parts