What person should I write a penetration test report as?

What person should I write a penetration test report as?

When you're writing a report, what person do you write it as?

First person singular: I discovered a vulnerability in HP Power Manager...

First person plural: We discovered a vulnerability in HP Power Manager...

Third person singular, by name: Bob discovered a vulnerability in HP Power Manager...

Third person singular, general: The tester discovered a vulnerability in HP Power Manager...

Third person singular, attacker: The attacker discovered a vulnerability in HP Power Manager...