Someone else in the US state security apparatus has contacted the IG in preparation of making a whistle-blower complaint:

A second intelligence official who was alarmed by President Trump’s dealings with Ukraine is weighing whether to file his own formal whistle-blower complaint and testify to Congress, according to two people briefed on the matter.

The official has more direct information about the events than the first whistle-blower, whose complaint that Mr. Trump was using his power to get Ukraine to investigate his political rivals touched off an impeachment inquiry. The second official is among those interviewed by the intelligence community inspector general to corroborate the allegations of the original whistle-blower, one of the people said.

The inspector general, Michael Atkinson, briefed lawmakers privately on Friday about how he substantiated the whistle-blower’s account. It was not clear whether he told lawmakers that the second official was considering filing a complaint.

A new complaint, particularly from someone closer to the events, would potentially add further credibility to the account of the first whistle-blower, a C.I.A. officer who was detailed to the National Security Council at one point. He said that he relied on information from more than a half-dozen American officials to compile his allegations about Mr. Trump’s campaign to solicit foreign election interference that could benefit him politically.

I still think that Congress should have a broad impeachment investigation, because the complete lawlessness of this administration needs to be made public, but this does make things for Trump and his Evil Minions^™.

As an aside, excluding Trump’s rather incendiary tweets,  the reception that these whistle-blowers have received from the establishment and the intelligence agencies have been far more supportive than (for example) Binney, Drake, and Kiriakou.

The only logical explanation for this is that this (relatively) benign behavior is a result of their being more supportive of the whistle-blowing regarding the Ukraine than they are of whistle-blowing regarding torture, spying on American citizens, and going to war under false pretense.

Whistle-blowers are generally treated like sh%$, and this needs to change.