I've seen a few videos of people making 'Black Smoke Rings' in the sky...
I saw one created as a child here in the UK... when a military Jet and light aircraft collided, it looked exactly like the one in the video and hung there as we drove past.
As for the strange phenomenon in the News Report... who knows? Unfortunately, technology has brought us to a place where we just can not be sure of anything but the Word of God upon which our salvation depends. If it is a real, then those who know their God know exactly what it is, though why it is able to manifest in our dominion raises a few issues.
Before the glorified Christ asked the Father to send the promise of the Spirit...
1 - And when the day of Pentecost was fully come, they were all with one accord in one place.
2 - And suddenly there came a sound from heaven as of a rushing mighty wind, and it filled all the house where they were sitting.
3 - And there appeared unto them cloven tongues like as of fire, and it sat upon each of them.
4 - And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.
Which immediately 'began to' and still is restraining the appearance of such lawlessness and shall continue to do so until He The Holy Spirit with the Church which He indwells [ 1 Jn 4:4] is taken out of the way at the Rapture...
2 Thessalonians 2:5-7
5 - Remember ye not, that, when I was yet with you, I told you these things?
6 - And now ye know what restrains that he [Antichrist] might be revealed in his [set] time.
7 - For the spirit of antichrist doth already work: only he [The holy Spirit] who now restrains it, will continue to do so until he be taken out of the way.
We have a few events in scripture that tell us that the manifestation of such devils [not dead relatives] before the Holy Spirit was sent, wasn't exactly unheard of.
But when they [the disciples] saw him [Jesus] walking upon the sea, they supposed it had been a spirit, and cried out:
36 - And as they thus spake, Jesus himself stood in the midst of them, and saith unto them, Peace be unto you.
37 - But they were terrified and affrighted, and supposed that they had seen a spirit.
38 - And he said unto them, Why are ye troubled? and why do thoughts arise in your hearts?
39 - Behold my hands and my feet, that it is I myself: handle me, and see; for a spirit hath not flesh and bones, as ye see me have.
And why did they think they were looking at an unclean spirit?
Because before The Restrainer of such lawless acts appeared at Pentecost, it wasn't exactly uncommon. Therefore, as the Church becomes ever Apostate and the presence of The Restrainer diminishes, shouldn't we expect to see the rise of such manifestations on the earth in these last days? And so much more once The Holy Spirit has been taken.
7 - And the shapes of the locusts were like unto horses prepared unto battle; and on their heads were as it were crowns like gold, and their faces were as the faces of men.
8 - And they had hair as the hair of women, and their teeth were as the teeth of lions.
9 - And they had breastplates, as it were breastplates of iron; and the sound of their wings was as the sound of chariots of many horses running to battle.
10 - And they had tails like unto scorpions, and there were stings in their tails: and their power was to hurt men five months.