When activating a squad mode ability that is Sustained, the Cohesion cost is only paid once per mission; after the initial cost has been paid, the Sustained ability may be freely used by any Battle brother in the kill team (provided they are in squad mode) for the duration of the mission
This is from Rites of Battle pg 226
Does this mean any sustained Squad mode is only paid for once per mission, what happens if another different squad mode is used later on, I'm assuming you pay for that as normal.
So does that mean should the situation change can a marine then go back to using the first squad mode without paying the cohesion again.
eg Kill team Alpha goes into squad mode and puts up Mode A, they pay the cost, later a situation arises where Mode B is needed, they pay the cost, later as situations arise they now have the use of Mode A & B for free or they can pay for Mode C and so on.
No need to answer I found what I need in the Errata
If the marine does not voluntarily, or involuntarily cease sustaining a squad mode ability, it will not expire. And the cost only need be paid once.
If a marine chooses to stop the ability it ends, and the cohesion cost must be re-paid to reactivate.
If the marine is knocked unconcious or drops out of squad mode the ability he is sustaining immediately ends. The ability's cohesion cost must be paid again to reactivate.
If the team runs out of cohesion for whatever reason, ALL sustained abilities immediately end.
The following two quotes are clarifications from FFG:
"When a Battle-Brother leaves Squad Mode, for any reason, while sustaining a Squad Mode Ability, the Ability is no longer sustained and its effects end as if he had chosen to stop sustaining it at that moment.
Thank you for your questions and happy gaming,
"Sorry for the confusion as to your question. In answer to your actual question, in the event that you leave squad mode for any reason, you do, in fact, have to pay the Cohesion cost again when you choose to reactivate the Squad Mode Ability."