Original sentence: As well, experience gained in peacekeeping operations has been invaluable to the Canadian Forces when Canadian troops were called out in domestic situations; for one example, during the Oka crisis.Even though Canada has lost more soldiers in peacekeeping operations than any other nation (107 Canadian fatalities of the 1,450 killed on UN peacekeeping missions) most Canadians believe the high cost is justified in order to create a more peaceful world.However, the world's most experienced peacekeeper, Canada, has asserted the costs of peacekeeping are worthwhile.Peacekeeping can be extremely stressful.Peacekeeping has been viewed by critics as potentially very harmful to individual military participatants.There are higher rates of mental health problems, suicide, and substance abuse among former peacekeepers than among the general population.Those critics have expressed their concerns that participation in peacekeeping operations will erode the combat ability of troops, and thus make it more difficult for military personnel to fight effectively in an all-out war.UN peacekeepers in the field have also suffered from attacks on humanitarian workers
Edited sentence: Deployment fatigue remains a possible risk.Even though Canada has lost more soldiers in peacekeeping operations than any other nation (107 of the 1,450 peacekeepers killed so far have been Canadian), it feels that the cost is acceptable in order to maintain a more peaceful world.However, the world's most experienced peacekeeper, Canada, feels that peacekeeping does not do excessive harm to its troops.In the 1990s, over 30 deployments were authorized.It has been worried that many peacekeeping operations will erode the combat ability of troops and make it harder for them to fight a real war.Peacekeeping has also been found to be extremely stressful, and there are higher rates of mental problems, suicide, and substance abuse among former peacekeepers than the general population.Peacekeeping has also been viewed as a threat to the participating militaries.Prior to the end of the Cold War, no more than six missions were authorized in any one decade.The Canadian Forces' experience in peacekeeping operations has proved invaluable when the troops have been called out to aid the civil powers in domestic situations as in the Oka crisis.UN peacekeepers have also suffered a high level of deaths from violence against them