Why is there a 去 in 我们需要确保社交距离去保护您和我们的员工? My friend took a photo of this Chinese sign in Australia:


(click to enlarge)

It's a formal, long-winded way of saying &quot;stay 1.5 meters apart&quot;.  Specifically it says:

亲爱的顾客：
根据澳洲政府规定，我们需要确保社交距离去保护您和我们的员工。
请遵守1.5米社交距离规定。
谢谢您的配合
汇丰银行

However, I'm curious as to why there is a 去 in there.  I've come up with a few hypotheses: (a) it's some grammar pattern I'm unfamiliar with (something like the reverse of 来 used to connect two verb phrases), (b) it's used to mean &quot;to&quot; in English, (c) it's related to a dialect.  I'm not sure if any of these are correct.
Question: Why is there a 去 in the above?
I also wondered people can use either '来' or '去' for 'to'  as in  用水来滅火 and 用水去滅火, and my impression is as follow:

来(to) emphasize the mean


[确保社交距离][来] 保护您和我们的员工 = To protect you and our employees with (the policy of) ensure social distancing

~

去(to) emphasize the objective


确保社交距离 [去] [保护您和我们的员工] = use (the policy of) ensure social distancing to protect you and our employees

Similarly:
用水滅火 = use water extinguishes a fire
用水来滅火 = extinguish a fire with water (stress 水 is the mean)
用水去滅火 = use water to extinguish a fire (stress 滅火 is the objective)
Edit:
Also, we use 来 when the object is close to you; we use 去 when the object is a distance from you
Example:
來我家 - come to my home
去你家 - go to your house
With this rule, we can apply it to your question
确保社交距离 [来]保护您和我们的员工 (保护您和我们的员工 is the goal right in front of you)
确保社交距离 [去] 保护您和我们的员工 (保护您和我们的员工 is a goal you set out to reach)
The two sentences basically mean the same, just from a different perspective